PHYSICS
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INDEX Physics 1.
MEASUREMENT OF OF LE LENGTH
2.
OUR UNI UNIVERSE SE--GRAVI VIT TATION
3.
KINEMATICS
4.
DYNAMICS
5.
ELECTROMAGNETIC SPE SPECTRUM
6.
SOUND
7.
LIGHT-NATURE OF LIGHT
8.
MAGNETISM
9A.. CU 9A CURR RREN ENT T ELEC ELECTR TRIC ICIT ITY Y 9B.. ELECTRICITY 9B 10. MODERN PHYSICS 11. ELECTRONICS SRIGAYATRI
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PHYSICS
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UNIT - I
1
Measurement of Length 1. 2.
Least count of an or oridnary sc scale is a) 1 mm b) 1 cm c) 0.1 mm d) 0.01 mm If x is the the dist distanc ancee trave travelle lled d by the the tip tip of the sc screw rew thr through ough a nut nut when when ‘n’ ‘n’ comp complet letee revol revoluti utions ons of the the head are made, then pitch of the th e screw P= a) nx
3.
b)
x
c)
n
d) x + n
If P is the the pit pitch ch of the sc scre rew w and and N is the the numbe numberr of hea head d scal scalee divis division ionss then then the the lea least st coun countt (L.C. (L.C.)= )= a) PN
b) P + N
c)
d)
N nP KEY N xP
1) a
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2) b
3) c
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PHYSICS
CLASSC - X
UNIT - II
2
Our Iniverse - Gravitation 1.
4.
Accord Acco rdin ing g to to Kep Keple lerr con conce cept pt th thee orb orbit it of a pla plane nett aro aroun und d the the su sun n is is a) circular b) elliptical c) rectangular d) linear The weight of an object a) is the quantity of matter in it b) is the force with which it is attracted to the earth c) is basically the same quantity as its mass but is expressed in different units un its d) is independent of gravitational pull The weight of 400 gm stone is a) 0.041 N b) 0.4 N c) 3.9 N d) 3 920 N Thee val Th value ue of ac acce cele lera rati tion on du duee to to gra gravi vity ty ‘g ‘g’’ is is nea nearl rly y
5.
a) The value of ‘G’ is
2.
3.
7.
9. 10.
d)
b)
a) 6.67 × 10−11 Nm2 Kg 2
b) 6.67 × 10−11 Nm2 Kg −2
c) 6.67 × 10−11 Nm −2 Kg −2 Relation between g, G,M and r
d) 6.67 × 10−11 Nm −2 Kg 2
a) g 8.
c)
1 2 2 980cms 98cms 9.8cm/ 9. 9.8cm.s 9 8cm/ 6.8 6c)m 7 ×6/ 16s-10s72-2-21-1× Nm 10−11Kg Nm2 Kg −2 d) 6.67 × 10−11 Nm2 Kg −2 Nume Nu meri rica call va valu luee of ‘G ‘G’’ is ex expe peri rime ment ntal ally ly found found to be
a) 6.
b)
=
GM r
b) g=GMr
c) g
=
GM 2
r
2
d) g
=
Gr
M
As we mo move ve up upwa ward rdss fro from m the the su surf rfac acee of of ear earth th th thee val value ue of g a) does not change b) decreases c) increases d) becomes zero At poles the value of g is a) constant b) decreases c) maximum d) minimum The ear earth th is is flatt flattene ened d at pol poles es and and bulge bulged d at the equ equato atorr. This This is is due due to a) The earth revolves round the sum in an elliptical orbit b) The ang angula ularr vel veloci ocity ty of spi spinnin nning g abo about ut its axi axiss is mor moree at the equ equato ator r c) The centrifugal force is more at the equator than it poles d) None of the above
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PHYSICS
11.
12. 13. 14. 15. 16.
17.
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If the earth is
1 4
of its present distance from the sun, the duration of year would be
a)
of the present year
b)
c)
of the present year
d)
19. 20. 21. 22.
of the present year
Which one of the following changes with change in place? a) mass b) weight c) mass and weight d) none of these The theory that states that the earth and the other planets move around the sun is----a) heliocentric b) ptolemic theory c) geocentric theory d) dalton’s theory “Every object in this universe attracts every other object”. This foce is called a) Gravitational force b) frictional force c) cohision force d) nuclear force The astronomer who proposed geometric theory is a) copernicus b) Tycho brahe c) ptolemy d) kepler The relation between the gravitational constant (G) and the force of attraction between two unit masses when they are unit distance apart is a) F>G b) F
18.
of the present year
b)
c)
d)
The value of ‘g’ on the sun is 11 c)mm 1.67 9.8 27.4 2.74 /s 2s−2211 Nm 2 / kg m ×/ 10 6.67 a) 27.4m / s 2 b) d) 8 6 4 The quantity of matter contained in a abody is 16 called its a) volume b) weight c) momentum d) mass The S.I unit of weight is a) Kg b) newton c) pascal d) watt The gravitational unit of force in C.G..S system is................ a) Kg.wt b) N. Force c) Quinta wt d) Gm.wt When a spring is fixed at one end and a force is applied to the other end, the streetching of the spring is proportional to the applied force. this law is known as a) newton’s second law of motion b) graham’s law of diffusion c) newton’s law of universal gravitation d) hooke’s law
KEY
1) b 9) c 17) b
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2) b 10) c 18) a
3) c 11) c 19) d
4) a 12) b 20) a
5) d 13) a 21) d
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6) b 14) a 22) d
7) c 15) c
8) b 16) c
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PHYSICS
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UNIT - III
3
Kinematics 1. 2.
3.
The value of the acceleration due to gravity ‘g’ is nearly a) b) c) d) A body is projected vertically upwards with a avelocity of 10 m/s. The maximum height reached by the body is (Take g=10 ) a) newton’s second law of motion b) graham’s law of diffusion c) newton’s law of universal gravitation d) hooke’s law The maximum height reached by body thrown up with an initial velocity ‘u’ is a)
4. 5. 6.
b)
8. 9.
d)
The time taken by a body thrown up to reach maximum height ‘h’ is called its a) time of descent b) time of flight c) time of ascent d) none 2 −−−11− The time for which the body remains in air is called 22 u 1 2 12 144 196 19.6 980 98 58.8 588 9.8 .ssss21s−−21−1−111 cm m cm m s.−s− −.− − − sm /cm u uugu21m (m d h) = a) time of ascent b) time of descent d) mean time 2c) time of flight 2 2gggg2g Time of descent = a)
7.
c)
b)
c)
d)
The initial velocity of a freely falling body is a) 9.8 m/s b) 10 m/s c) 0 d) none A ball is thrown up and attains a maximum height of 80m. What is its initial speed? a) 40 m/s b) 80 m/s c) 45 m/s d) 42 m/s In order to keep a body in air above the earth 12s with what velocity the body is to be thrown vertically up? a) b) c) d)
10.
For a body the time of descent =
11.
is a) 1s b) 2s c) 0 d) none of these The velocity of the stone on reaching the ground when it is dropped from a height of 19.6 m is a)
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s and its time of ascent
b)
s, then the time of flight of that body
c)
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d) 0
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PHYSICS
12.
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A body starting from rest falling freely under the influence of gravity its velocity after 4s is a)
13.
14.
b)
c)
d)
A body starting from rest is moving with acceleration of 5 in 5s? a) 125 m b) 62.5 m c) 625 m
. What is the distance travelled by it d) 67.5 m
A body thrown upwards takes 1.5 seconds to reach the maximum height it velocity of the a) zero
body must be c) 14.7 m
b) 19.6 m
, the initial
d) 24.5 m
KEY
1) a 9) c
2) a 10) a
3) c 11) c
4) c 12) b
5) c 13) b
6) c 14) c
7) c
8) a
2 −−1− 111 m sm − m m m sss/− s 2 980 9.8 39.2 43 −−−s − 9.8 g= m
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PHYSICS
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UNIT - IV Dynamics
4 1.
2.
3. 4.
In a uniform circular motion, if the radius is doubled, the centripetal force now required is a) one-quarter as great as beofore b) half as great as before c) twice as great as before d) four times as great as beofore A car moves on a curved but level road. The necessary centripetal force on the car is provided by a) inertia b) gravity c) friction between the tyres and the road d) normal reaction of the car The rate of angular displacement is defined as a) Angular velocity b) Angular displacementc) Angular acceleration d) Angular force The relation between time period T and frequency f is 1 b) f
a) T=f 5. 6.
b)
b) vrg
10. 11.
12.
d)
22 ω 2r 2 222ω mr m r θ c) ω mr m rv ω rm r ω r ω ω1 rv f vω vg T == 1 T rg r f rg c)
d) d)
c)
d)
c)
d)
Centripetal acceleration a= a) vr
9.
c)
Angle of banking is θ then tan = a)
8.
1 T
Angular momentum of a particle L= a) b) mvr The centripetal force F= a)
7.
=
b)
This is a fictitious force in an inertial frame of reference a) centrifugal force b) centripetal force c) gravitational force d) none In a uniform circular motion, the angular velocity is a) zero b) maximum c) minimum d) constant The forces that help the electron to revolve round the nucleus of an atom a) electrostatic forces b) Elecromagnetic forces c) Elecrovalent forces d) Photo-electric effect Faster the initial horizontal speed of the stone thrown greater is the radius of a) Curved path b) Straight path c) Elliptical path d) Hyperbolic path
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PHYSICS
13. 14.
15. 16.
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The forces that govern the translatory motion of a body obey a) Kelper’s laws b) Newton’s laws c) Faraday’s laws d) Coulomb’s laws Presence of grand water in a region of a country can be detected using a) Remote sensing satellites b) Communication satellites c) Space research stations d) Natural satellites The motion of a fly wheel is an example for a) Rotatory motion b) Translatory motion c) S.H.M d) None of the above The angular velocity is given by a) /T radian/ second b) 2 /T radian/second c) 3 /T radian/secondd) 4 /T radian/second
KEY
1) c 9) a
2) c 10) d
3) a 11) a
4) c 12) a
5) b & a 13) b
6) b 14) a
7) d 15)a
8) d 16) b
π
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PHYSICS
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5
UNIT - V Electromagnetic Spectrum
1.
2. 3. 4. 5. 6.
7.
8. 9. 10. 11. 12.
13.
The wavelength range of visible spectrum is a) 0.001 nm- 10nm
b) 0.4
c) Speed of light in vaccum is
d)
a) b) 3 × 105 m / s c) 3 × 108 m / s d) 3 × 10−8 m / s The elecromagnetic radiation observed in radioactivity is a) α -particle b) -particle c) -rays d) X-rays Which of the following rays are used to take photographs of objects in darkness? a) Infrared rays b) Micro waves c) Ultraviolet rays d) Gamma rays Elecro-magnetic radiations with shortest wavelength are a) Infra-red b) Gamma rays c) Ultraviolet rays d) X-rays Waves useful in telemetry 3 γ α 0.7 β μ×m μ μ−Gmma m m mray μ mwaves 1.0 0.7 − −10 100 5 10 /μ sm m a) X-ray waves b) c) Radiowaves d) Micro waves Long term exposure to these radiation can lead to skin cancer a) Infrared radiations b) X-rays c) Ultraviolet radiations d) Gamma radiations Waves produced by the elecromagnetic oscillators of low frequency a) Microwaves b) Radiowaves c) X-rays d) Infrared rays Radiations used in medical diagnosis a) X-rays b) Soft X-rays c) Hard X-rays d) Gamma rays A spectrum is a group of a) Wavelengths b) Frequencies c) A or B d) None These rays are used in testing materials in industry a) -rays b) -rays c) -rays The energy of electromagnetic radiation depends on a) Both its amplitude adn wavelength b) Its wavelength c) Its amplitude d) Temperature of the medium through which it passes A light wave constitute a) electric field b) magnetic field c) both A and B
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d) X-rays
d) none
42
PHYSICS
14. 15.
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Information about the universe is provided by a) Radar b) Radio astronomy Electromagnetic waves transprot a) charge b) frequency
c) Palmisty
d) Crystallographic studies
c) wavelength
d) energy
KEY
1) b 9) b
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2) c 10) c
3) c 11) d
4) a 12) b
5) b 13) c
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6) d 14) b
7) c 15) d
8) b
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PHYSICS
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UNIT - VI Sound
6 1.
Velocity of sound in air is b) v =
a) 2. 3. 4.
6. 7. 8. 9. 10. 11. 12.
13.
γ
c) v =
γ P ρ
d) v =
P
ρ
A medium transmits a sound wave through it by virtue of its a) elasticity b) inertia c) density d) elasticity and inertia Distance between a node and the next antinode in a stationary wave is 10 cm. Then the wavelength is a) 5 cm b) 40 cm c) 20 cm d) 10 cm The distance between a successive node and antinode is a)
5.
ρ P
λ
b) c) d) 2 -1 3 24 ρ λ λ / /4 350ms Periodic vibrations of decreasing amplitude areγ called v= a) forced vibrations b) natural vibrations 8 vibrations d) damped vibrations 4 c) stationary γ P A vibrating body produces a) electricity b) sound c) atomic energy d) solar energy The distance between two consecutive nodes in a stationary wave is equal to a) b) c) d) In a stationary wave, the points at which the displacement is minimum are called a) nodes b) antinodes c) crests d) troughs The waves that consist of compressions and rarefactions are called a) radio waves b) transverse waves c) longitudinal waves d) tidal waves The value of for air is a) 1.15 b) 2.4 c) 1.41 d) 1.14 If a spring is compressed and relased then the waves generated are a) longitudinal b)transverse c) stationary d) none Which of the following statement is true? a) Distance between two successive nodes is b) Sound waves in air are transverse c) Stationary waves in a amedium cannot transport energy d) Nodes and antinodes are produced in progressive waves Wavelength of sound whose velocity a) 3.5 cm b) 35 cm
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and frequency 100 Hz is c) 28.5 cm d) 26.5 cm NTSE Material
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PHYSICS
14.
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Formula for velocity of sound a)
15. 16. 17. 18. 19.
b)
c)
d)
On reflection from a rigid end a wave undergoes a phase change of a) 00 b) c) d) Always an antinode is formed at the a) closed end b) open end c) either at closed end d) none The frequency of a turning fork depends on its a) width of prongs b) amplitude of vibrationc) dimensions d) none of the above radians is equal to a) b) The vibrating particles in a wave transfer a) energy b) motion
c)
d)
c) mass
d) material
KEY
1) c 9) c 17) c
2) d 10) c 18) c
3) b 11) a 19) a
4) c 12) c
5) d 13) b
6) b 14) c
7) b 15) c
8) a 16) b
0 00 π vC = ϑλ 180 135 360 90 E mc V ( l22 − l1 ) P= 2 C V
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PHYSICS
CLASSC - X
UNIT - VII
7
Light - Nature of Light 1.
2.
3. 4. 5.
6.
7.
8. 9. 10. 11. 12.
13.
Light is a) wave phenomenon b) particle phenomenon c) both particle and wave phenomenon d) none of these The speed of light depends a) on elasticity as well as inertia b) on elasticity of the medium only c) on inertia of the medium only d) neither on elasticity nor on inertia Electromagnetic theory was proposed by a) Hertz b) Huygen c) Positrons d) Max planck Corpuscular theory of light could not explain the phenomena of light called a) interference b) polarisation c) diffraction d) all The imaginary three dimensional surface formed byt he envelope of the particles of the medium which are vibrating in the same phase is called a) Electromagnetic wave b) Population inversion c) Wavefront d) Pencil light The imaginary line drawn normal to any wavefront that represents the path along which light travels is called a) cosmic ray b) light ray c) X-ray d) cathode ray The bending of wavefront or its deviation fromt he original direction of propagation when it meets a small obstacle is called a) diffraction b) coherence c) interference d) reflection The trough of water wave in aripple tank behaves like a a) convex lens b) cylindrical lens c) planoconvex lens d) concave lens According to newton velocity of light in a denser medium is......... than in a rarer medium a) more b) less c) zero d) infinity Scientist who proposed wave theory? a) Fresnel b) Newton c) Young d) Huygens Velocity of water waves depend upon a) Hardness b) Softness c) Depth d) None of the above Shallow water region behaves as a) Boundary of the media b) Denser medium c) Rarer medium d) None of the above The crest of the water wave in a ripple tank behaves as a) Concave lens b) Plano concave lens c) Double concave lensd) Convex lens
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PHYSICS
14. 15. 16. 17. 18.
19.
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The trough of the water wave in a ripple tank behaves as a) convex lens b) plano convex lens c) concave lens d) none of the above When a crest of a wave falls on the crest of another wave then the interference is a) constructive b) destructive c) normal d) abnormal When a crest of one wave falls on the trough of another wave then the interference is a) Constructive b) normal c) Abnormal d) Destructive Bending of light waves around an obstacle is known as a) Refraction b) Diffraction c) Polarisation d) Reflection According to Huygens, the light waves are a) transverse & mechanical waves b) longitudinal & mechanical waves c) mechanical waves only d) stationary waves Interference is a chracteristic phenomenon of a) Water waves b) Sound waves c) Light waves d) all waves
KEY
1) c 9) a 17) b
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2) d 10) d 18) b
3) c 11) c 19) d
4) d 12) b
5) c 13) d
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6) b 14) c
7) a 15) a
8) d 16) d
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PHYSICS
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UNIT - VIII Magnetism
8 1. 2. 3. 4. 5. 6.
The length of a steel bar after magnetisation a) increases b) decreases c) remains same d) none The scientist who developed molecular theory is a) weber b) coulomb c) curie d) ewing Magnetic substance a) Brass b) Wood c) Nickel d) Paper Load stone is a a) man made magnet b) natural magnet c) permanent magnet d) non-magnetic substance The manget with only one pole a) exists b) does not exist c) is a strong magnet d) is a weak magnet The substance repelled by magnet is a) Fe b) Al c) Pt d) Steel B A AB φ ==φ AB φ =B A1
KEY
1) a
2) d
3) c
4) b
5) b
6) d
8.2INVERSE SQUARE LAW OF MAGNETISM 1. 2. 3.
The unit of pole strength in S.I. units is a) Weber b) ampere-metre c) ampere/meter d) ampere-metre 2 The relative permeability for a diamagnetic substance is a) very high b) nearly equal to 1 c) more than 1 d) zero When the distance between the poles is halved the magnetic force is a) decreases by 4 times b) increases by 4 times c) doubles d) becoems half
4.
Relation between
5.
a) ` b) Unit of pole strength is S.I. system a) Ampere b) Tesla
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, B and A is
c)
d)
c) Ampere
d) metre
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PHYSICS
6.
CLASSC - X
For air or vaccum a)
b) 4π × 107 H / m
c) 4π × 10−17 H / m
d) 1
KEY
1) b
2) b
3) b
4) c
5) c
6) d
8.3 INVERSE SQUARE LAW OF MAGNETISM 1. 2. 3.
The unit of magnetic moment in S.I. system a) Ampere-metre2 b) Ampere-metre c) Ampere/metre d) Ampere/metre2 If the resultant magnetic moment is zero then such substances are a) dia b) para c) ferro d) anti ferro The magnetic field induction on the axial line of a short magnet at a distance ‘d’ isB=......Newton/ Ampere-metre. a)
M
b)
d 3
c)
d)
μ 0 2 M . 4π d 3
KEY
1) a
2) a
3) d
−7 M 2μ = M μ 4 π r 0 × 10 H / m . π 3 d 3 LINES OF FORCE 4d 8.4 MAPPING OF MAGNETIC
DUE TO A BAR MAGNET: NEUTRAL POINTS 1. 2.
The material is used in make electro magnets a) steel b) copper c) iron d) soft iron The resulatnt magnetic fields of the earth and the bar-magnet at the neutral points is a) greater than 1 b) maximum c) zero d) none KEY
1) d
2) c
8.5 MAGNETIC PROPERTIES OF MATERIALS 1. 2. 3.
Which one of the following is not a diamagnetic substance? a) Air b) Water c) Iron d) Bismuth If the resultant magnetic moment is not zero then such substances are a) para b) dia c) molecular magnet d) none The substances which are easily attracted by a magnet are a) magnetic substances b) non-magnetic substances c) paramagnetic substances d) diamagnetic substances
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PHYSICS
4.
CLASSC - X
7.
The dipoles in a particular domain are a) irregular b) parallel to each other c) perpendicular to each other d) none Aluminium is an example for ................... magnetic substance a) Dia b) Para c) Ferro d) None The material which has high retentivity a) steel b) copper c) Iron d) Soft iron The units of χ are c)
d) No units
8.
a) b) For diamagnetic substance a)
c)
d)
Example of a magnetic substance a) Water b) Paper For ferro magnetic substances
c)Aluminium
d) Steel
a)
c)
d)
5. 6.
9. 10. 11. 12.
b)
b)
Which one of the following is not a diamagnetic substance? a) air b) water c) iron Aluminum is an example for....... magnetic substance a) Dia b) Para c) Ferro
1) c 9) c
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2) a 10) c
KEY 22 m /< ≤ > >> μ r − A m1 1 4) b 5) b 12) b
3) a 11) c
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d) bismuth d) None
6) a
7) d
8) c
50
PHYSICS
CLASSC - X
UNIT - IX(a)
9
Current Electricity 1. 2. 3. 4. 5.
6.
7.
8.
Current detector is a) Ammeter b) Voltmeter c) Galvanometer d) none The study of electric charges at rest a) Electrostatics b) Electrodynamics c) Hydrostatics d) none The unit of Electric current is a) Ampere b) Volt c) Coulomb d) Ohm Example of a power source a) cell b) bulb c) resistance d) rheostat A number of small bulbs connected in series used in marriage decoration; one of the bulbs is broken a) All the remaining glow b) All the bulbs prior to it glow c) All the bulbs after the broken glow d) All the bulbs fail to glow The wiring bulb sets of many small bulbs in decorative lighting of functions connected a) In series b) In parallel c) Neither in series nor in parallel d) Either in series or in parallel A number of bulbs connected in parallel; one of them is broken a) Remaining bulbs glow b) Bulbs above it glow c) Bulbs below it glow d) All the bulbs fail to glow If three cells of IV, 1.5V, and 2V are connected in paralle then the total e.m.f. will be a) 2.5V b) 2V c) 1.5V d) 4.5V
KEY
1) c
2) a
3) a
4) a
5) d
6) a
7) a
8) b
9.2 ELECTRICAL RESISTANCE-OHM’S LAW AND ITS VERIFICATION 1. 2. 3. 4.
Example for a conductor a) rubber b) silicon Example for an insulator a) acid b) human body The filament in the bulb is a) bad conductors b) capacitor 1 volt/ 1 ampere=? a) 1 coulomb b) 1 ohm-metre
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c) carbon
d) wood
c) impure water
d) pure water
c) high resistance
d) source
c) 1 ohm
d) none
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PHYSICS
5. 6. 7. 8. 9. 10. 11.
CLASSC - X
Metallic nature arises due to a) lack of electrons b) absence of electrons c) free electrons The characteristic property of a conductor is a) Wattage b) Voltage c) Resistance Opposition to flow of charges is called www.crsttp.blogspot.com a) Conductivity b) Resistance c) Reisistivity Electric current is measured in a) Coulombs b) Amperes c) Volts Oppositon to the flow of electrons is a) Resistance b) Resistivity c) Conductivity Ohmic conductor a) Semi conductors b) Electrolytes c) Junction diode Non- ohmic conductor a) Electrolyte b) Metals c) Copper
d) none d) Resistivity d) Specific Resistance d) Ohm-meter d) None d) Metals d)Aluminium
KEY
1) c 9) a
2) d 10) d
3) c 11) a
4) c
5) c
6) c
7) b
8) b
9.3 LAWS OF RESISTANCE 1. 2.
3.
ρ As the temperature increases resistance.............. for a conductor Ω RL RA AL R 12 = 1 a) increases b) decreases R L Ac) no change Specific resistance =
d) none
a)
c)
d)
c) ohm-meter
d) ohm/meter
b) R L A
Unit for specific resistance a) ohm b) meter
KEY
1) a
2) c
3) c
9.4 RESISTANCES IN SERIES AND PARALLEL 1.
2. 3.
Given
=100 ohms and
ohm, calculate the effective resistance, if resistances are connected
in parallel a) 0.99 ohms b) 9.9 ohms c) 0.909 ohms d) 101 ohms What is the equivalent resistance of two resistors 6 and 12 when connected in series a) 18 b) 12 c) 6 d) 4 The equivalent resistance when two resistors of 8 each are connected in parallel a) 2 b) 8 c) 16 d) 4
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S R I G AY AT R I E D U C A T I O N A L I N S T I T U T I O N S
NTSE STUDY MATERIAL CHEMISTRY - IX 1. 2. 3.
4.
5.
6. 7. 8.
9.
Which one of the following is not a measrable property of a gas [ ] a) Volume b) Pressure c)Temperature d) Density The force of attraction between the molecules is maximum in the case of [ ] a) Solids b) Liquids c) Gases d) Plasma I. Gases are light [ ] II. Gases possess weight . In the above given statements a)Statement (I) is correct b) statement (II) is correct . c) Both statements are correct d) Both statements are wrong The random collisions of the molecules of the gas is the reason for the one of the following [ ] a) Volume of the gas b) Pressure of the gas c)Density of the gas d) Mass of the gas Manometer is used to measure [ ] a) The pressure of the atmosphere b)The volume of the gas c) The pressure exerted by any gas d) The temperature of the gas Decrease in the volume of the same quantity of gas under pressure is known as [ ] a) Rigidity b)Fluidity c) Density d) Compressibility The property of diffusion is highly observed in [ ] a) Solids b) Liquids c) Gases d) None Boyle’s law will be applicable under [ ] a) Constant temperature b) Constant volume c) Constant pressure d) Constant compressibility The value of absolute zero of temperature is [ ] a)Ok
10.
b) 2730 C
12. 13. 14. 15.
d) All
Among NH 3 , CO2 , Hcl and O2 , the rate of diffusion will be maximum in a) CO2
11.
c) 320 F
r1 r2
b) NH 3
d 2 d 1
c) O2
is the mathematical expression for
[
]
[
]
d) HCl
a) Boyle’s law b) Charles’s law c) Graham’s law of diffusion d) None The meaning for the term ‘atom’ is [ ] a) Very small b) indivisible c) Cannot be seen d) Great The very first atomic theory was proposed by [ ] a) Democritus b) John Dalton c) J.J Thomson d) Ernest Rutherford The number of subatomic particles present in an atom is [ ] a) One b) Two c) Three d) Many The pressure to be maintained in the discharge tube for the production of cathode rays is [ ] a) 760 mm of Hg
b) One mm of Hg
c)76 mm of Hg
d) 10 mm of Hg
S R I G AY AT R I E D U C A T I O N A L I N S T I T U T I O N S
16.
The mass of the electron is
18. 19.
28
a) 10 8 cm
b) 10
20. 21. 22. 23.
24. 25. 26.
27.
28. 29. 30.
31. 32. 33.
]
b) 1.67 10 24 gm c)1.602 10 19 gm d) Zero gram gm Select the correct statement from the following [ ] a) Electron is 1837 times heavier than proton b) Proton is 1837 times lighter than electron c) Electron is 1837 times lighter than proton d) electron and proton have equal mass Under the electric field the anode rays will be dloviated towards [ ] a) Anode b) Cathode c) North pole d) South pole The size of the nucleus of the atom is in the order of [ ] a) 9.10 10
17.
[
10
cm
The number of neutrons present in 14 6 C is
c)10
13
cm
d) 10
15
cm [
a) 14 b)8 c) 6 d) 20 The cathode ray particle was named as electron by [ a) J J Thomson b) Rutherford c) Dalton d) G.J stoney The nucleus of the atom was discovered by [ a) Rutherford b) J.J Thomson c) Robert Brown d) John Dalton The number of sulphur atoms present in a sulphur molecule under normal contrition is [ a) 2 b) 4 c) 6 d) 8 One of the following is not an inert gas [ a) Fluorine b) Neon c) Argon d) Krypton The number of electrons present in the fourth orbit is [ a) 32 b) 18 c) 8 d) 16 The atom which is highly stable even though it does not have the octet configuration is [ a) Ne b)Be c)He d) Se I) Molecules have lower energy than that of combined atoms [ II) Atoms are more stable than molecules III) Molecules are more stable than atoms In the above statements .The true statements are a) I and II b) II and III c) I and III d) All The simple symbols to denote the valence electrons were introduced by [ a)Niles Bohr b) G.N Lewis c) J.J Thomson d) Dalton The correct electron dot symbol for carbon atom is [ a) x x C x b) x The number of valence electrons and total number of electrons in sodium atom will be [ a) 8 and 18 b) 1 and 11 c) 8 and 11 d) 1 and 8 Zn Z n2
Ze . In this equation , zinc is
[
] ] ]
] ] ]
] ]
] ]
] ]
a) Neutralised b) Reduced c) Oxidised d) All The reactant which accepts electron from the other reactant is called [ ] a) Catalyst b) Product c) Reluctant d) Oxidant Among the following the compound with a high melting point is [ ] a) Chloroform b) Chlorine c) Inethane d) Sodium chloride
S R I G AY AT R I E D U C A T I O N A L I N S T I T U T I O N S
34.
The molecule having a triple bond in it is a) O2
35. 36. 37.
b) N 2
39.
41. 42.
b) Cl 2
45.
46. 47.
49.
]
d) I 2
2 NH 3 DH = 22000 calories b) N 2 3H 2 22000 calories 2 NH 3 22000 calories
2 NH 3
d) All the above
Which one of the reaction will be endothermic in nature [ ] a) Reaction between carbon monoxide and oxygen b)Reaction between barium hydroxide and ammonium chloride c)Reaction between quicklime quicklime and water d) None The bond energy of H-H bond in kilocalorie / mole is [ ] a)104 b)57. 8 c)103.0 d)118.3 Which statements are true about the exothermic reactions [ ] i) During this reaction heat is released ii) The energy required to break the bond is less than the energy released during the formation of bond a) Statement i b) Statement ii c) Both d) None Energy stored in the molecules is known as [ ] a)Heat energy b) Light energy c) Internal energy d) kinetic energy Hydrogen monoxide has the formula of [ ] a) H 2O2
48.
c) Br 2
]
a) Mg 2 and F b) Mg 2 and F c) Mg 2 and F d) Mg 2 and F 2 Sodium atom gains the octet configuration and becomes stable by [ ] a) Gaining 1 electron b) Losing 1 electron c) Gaining 2 electrons d) Losing 2 electrons The energy released when a new bond is formed is called [ ] a) Potential energy b) Kinetic energy c) Bond dissociation energy d) Bond energy The correct method of writing an exothermic reaction is [ ]
c) N 2 3H 2
44.
]
The bond that is formed by the sharing of two pairs of electrons is called [ ] a) Single bond b) Ionic c) Double bond d) Triple bond The ions present in magnesium fluoride are [ ]
a) N 2 3H 2 43.
[
a) 900 b) 1050 c)1070 d)1090 Which one of the following in a non –polar solvent [ a) Benzene b) Chloroform c) Carbon tetrachloride d) All The element with the highest electro negativity is [
40.
]
d) F 2
The bond angle in NH 3 molecule is
a) F 2 38.
c) Cl 2
[
b) H 2O
The chemical name of FeO is a) Ferrum oxide b) Iron oxide 2 H 2O
Electrolysis
c) HO2
d)HO
c) Ferrous Oxide
[ ] d) Ferric oxide
2 H 2 O2
It is considered to be an a) Photochemical reaction c) Exothermic reaction
[ b)Thermo chemical reaction d) Electro chemical reaction
]
S R I G AY AT R I E D U C A T I O N A L I N S T I T U T I O N S
50. 51.
The gram molecular weight of water molecule is a) 18 grams b) 18 c) 8 grams The number of carbon dioxide molecules present in 1 mole is
52.
a) 60.23 1023 b) 6.023 1023 c) 6.023 1022 The volume of occupied by 34 grams of ammonia will be a) 2.24 litre b) 22.4 litre c) 44.8 litre
53.
22 grams of CO2 means
54.
a) 2 moles b) 1 mole At STP , the temperature is to be taken as
55. 56.
58.
59. 60. 61.
63. 64.
65.
66. 67.
c) 0.5 mole
a)1000 C b) 270 C c)100. C Volume – Volume relations use a hypothesis proposed by a) Boyle b) Charles c) Gay – Lussa Among the following the moderate reaction is a) Burning of magnesium b) Digestion of food
[
]
d)8 d) 60.23 1023 [ d) 4.48 litre d) 0.25 mole [
] ] ]
d) O0C [ d) Avogadro [
] ]
d) Reaction between Z n and Hcl
The units for rate of reaction is [ ] a) moles / litre /sec b) moles / litre c)Rusting of iron d) Reaction between The rate of the reaction __________with increase in the concentration of reactants[ ] a) In creases b) Decreases c) In creases and decrease d) Decrease and in crease During the decomposition of potassium chlorate the catalyst used is [ ] a) Nickel b) Manganese dioxide c) Sunlight d) All When the temperature increases by
[ 100 C , the rate of the reaction is a) Decrease b) Double or tripled c) Becomes Zero d)None If the reaction has attained the state of equilibrium ,than [ a)V f
62.
]
[
c) Rusting of iron 57.
[
V b
H 2 I 2
b) V f
V b
c)Vb
V f
2 HI .In this chemical equation the change in pressure
d)V f
]
V b [
a) Does not affect the state of equilibrium b) Favours the forward reaction c) Favours the backward reaction d) None The factors which can influence the equilibrium state are [ a) Concentration b) Pressure c) Temperature d) All Catalyst can be defined as a substance [ a) Which alters the rate of the reaction rate b) Which initiates the reaction c) Which does not alter the reaction rate d) None of the above Malachite is an ore of [ a) Zinc b) Copper c) Calcium d) Sodium The impurities present in the ore are known as a) Mineral b) Dressing c) Gangue Heating the ore in the absence of air is called a) Concentration b) Smelling c) Roasting
]
]
] ]
]
[ ] d) None [ ] d) Calcinations
S R I G AY AT R I E D U C A T I O N A L I N S T I T U T I O N S
68 69. 70.
71. 72.
73. 74. 75.
The element which is mostly abundant in the earth’s crust is a) Oxygen b) Silicon c) Nitrogen The formula for haematite is
d) Iron
a) Fe2O4
d) FeS 2
b) Fe2O3
c) Fe2CO3
In the bottom of blast furnace ,small
[
]
[
]
holes called tuyers are present .They are useful to [ ] a) To send the hot air b) To remove the impurities c)To derive the hot molten iron d) All the above The purest form of iron is [ ] a) Steel b) Pig iron c) Wrought iron d) Stainless steel The advantage/s of open hearth process is /are: [ ] a) A regenerative system of heat economy is employed to save the fuel b) The composition of steel can be controlled easily c) The steel obtained is of better quality d) All the above The process used to protect the metal from corrosion is [ ] a) Galvanizing b) electroplating c) Alloying d) All The allos made by mixing copper and tin is [ ] a) Brass b) Bronze c) Nichrome d) None The carbon content of steel is [ ] a) Less than 0.1 % b) Between 0.1% and 1.5 % c) More than 1.5 % d) 8.6 %
KEY-SHEET 1. D
2.
A
3.
C
4.
B
5.
C
6. D
7.
C
8.
A
9.
D
10. B
11. C
12. B
13. B
14. D
15. B
16. A
17. C
18. B
19. C
20. B
21. D
22. A
23. D
24. A
25. A
26. C
27. C
28. B
29. A
30. B
31. C
32. D
33. D
34. B
35. C
36. D
37. A
38. C
39. A
40. B
41. D
42. C
43. B
44. A
45. C
46. C
47. B
48. C
49. D
50. A
51. B
52. C
53. C
54. D
55. D
56. B 61. D
57. A 62. A
58. A 63. D
59. C 64. A
60. B 65. B
66. C 71. C
67. D 72. D
68. A 73. D
69. B 74. B
70. A 75. B
S R I G A Y A T R I
E D U C A T I O N A L
I N S T I T U T I O N S
CLASS X - Atomic Structure – Level - 1 1. 2.
3.
4.
As the frequency of the light increases, the momentum of its photon A) Increases B) Decreases C) Remains same D) Cannot be predicted The ratio of energy to frequency of electromagnetic radiation id called A) Bohr’s constant B) Rybberg’s constant C) Planck’s constant D) Ritz constant Energy difference between two adjacent orbits is minimum if they are A K, C- Shells B) C,M- Shells C) M,N – Shells D) N,O -Shells The minimum angular momentum of an electron with the magnetic quantum -1,0,+1
[
]
[
]
[
]
[
]
The radius of the atom is of the order of [ -10 -13 -15 -8 A) 10 cm B) 10 cm C) 10 cm D) 10 cm Rutherford’s experiment, which established the nuclear model of the atom, used a bean of [ A) - Particles, wich impinged on a metal foil and got absorbed
]
A)
5. 6.
7. 8.
3h 2
h
C)
2
D)
3h
B) rays , which impinged on a metal foil and ejected electrons C) Helium atoms, which impinged on a metal foil and ejected scatters. D) Helium nuclear, which impinged on a metal foil and got scatters The firt use of quantum theory to explain the structure of atom was mode by A) Planck B) Einstein C) Bohr D) Heijenbers According to Bohr’ theory, the angular momentum of electron in 5 th orbit is A) 2.5
9.
B)
mvr =
h
kh 2
B) 25
h
where ‘k’ is
C) 1
h
D) 10
B) 1
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
www.crsttp.blogspot.com
C) – 1
[
h
A) Principal quantum number B) Azimuthal quantum number C) Magnetic quantum number D) Spin quantum number 10. Total number of orbital in ‘m’ stationary state. A) 1 B) 4 C) 9 D) 16 11. The sub energy level having minimum energy is A) 3d B) 5 p C) 4 S D) 12. The azimutal quantum number of a non direction orbital is A) 0
]
D)m +
13.
The orbital with maximum number of possible orientations A) S B) P C) d D) f
14.
The quantum numbers n=3, l 1 , m=+1 and S=+
1 2
1 2
A) Na atom B) Al atom C) F atom D) K atom 15. Number of sublevels in fourth orbit [ ] A) 4 B) 5 C) 8 D) 4 16. An atom ‘or’ has one 4S electron and five 3d electrons. How many un paired electrons would be in cr +3. [ ] A) 1 B) 2 C) 3 D) 4
Page |
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NTSE SAT MATERIAL
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S R I G A Y A T R I
17.
B) 1 S1 2S2
B) 4
C) 12
B) A0
[
]
[
]
[
]
[
]
D) 1 S2 2 S1 2p1
D) 15
Units of electron affinity A) ev
20.
C) 1S3
Number of orbital used by chromium for filling it electrons is A) 24
19.
I N S T I T U T I O N S
If paul’s exclusion principle is not known, the electrone arrangement of lithium atom is A) 152 2S1
18.
E D U C A T I O N A L
C) nm
D) None
Electronic configuration of Cu A) (Ar) 4s2 3d10
B) (Ar) 4S2 3d9
C) (Ar) 4S2 3d7
D) (Ar) 4S2 3d8 KEY Atomic Structure – Level - 1
1)
A
2)
C
3)
D
4)
B
5)
D
6)
D
7)
C
8)
A
9)
B
10)
C
11)
C
12)
A
13)
D
14)
B
15)
D
16)
C
17)
C
18)
D
19)
A
20)
A
[
]
ATOMIC STRUCTURE – LEVEL - II 1. The frequency of light with wavelength of 5000A 0 A) 5.9 96x1 0 1 4 Hz
B) 3x10 1 8 Hz
C) 6.8 x 10 1 3 Hz
D) 3.4 x10 6 Hz
2. What is the equivalent of the energy unit 1 cm - 1 in Joule per photon. A) 1.9 9 x 10 - 2 3 J
B) 6.62 x 10 - 3 4 J
C) 3.12 x 10 - 3 4 J
[
]
D) None
3. The possible values of m for an electron with l 2 ?
[
] A) – 2 , – 1 , 0, + 1 , + 2
B ) – 1, 0, + 1
C) 1
D) –3, –2, – 1, 0, + 1,
+ 2, + 3
4.
(3P orbital)
A) Spheri cal nod e, radi al no de C) Spherical node, planar node Page |
1 75
X & y are
[
]
B ) Pl an ar node, spheri cal node D) None NTSE SAT MATERIAL
CHEMISTRY
S R I G A Y A T R I
E D U C A T I O N A L
I N S T I T U T I O N S
5. Ruther Ford’s scattering experiment is related to the size of the A) A tom
B ) Nucl eu s
C) Ne utron
[
]
D) E lectron
6. Which electronic level would allow the hydrogen atom to absorb a photon but not emit a photon?
[
]
7. Which of the following relates to photons both as wave motion and as a stream of particles [
]
A) 3S
B) 2 P
C) 2 S
A) I nte rf e rence B ) E = mc 2
D) 1 S
C) Diffraction
D) E = h
8. The electronic configuration of an element is 1S 22S22P 63S23p64S13d5. This represents. A) E x ci ted s tate
B) Gr ou nd sta te
C) Ca ti oni c f orm
[
]
D) Anioni c form
9. If the Nitrogen atom had electronic configuration is 1S 7 , It would have energy lower than that of the normal ground state configuration 1S 2 2S 2 2P 3 . Because the electrons would be closer to the nucleus, xet 1S 7 is not observed because it violates. [ A) Heis enb e rg un ce rtai nty p ri nci pl e
B) Hund’s ru l e
C) Pauli’s exclusion principle
D) Bohr’s theory
10.
The number of radial nodes of 3S and 2P orbitals are respectively
A) 2, 0
B ) 0, 2
C) 1, 2
A) (Ne) 3S 2 3P 6 B) (Ne) 3S 2 3 P 2 12.
C) (Ne) 3S 2 3P 4
[
]
[
]
[
]
[
]
D) 2, 1
Electronic configuration of S - 2 is
11.
]
D) (Ne) 3S 2 3P 5
In an atomic orbital, the sign of lobes indicates the
A) S ign of probabil ity distribut ion B ) Si gn of c ha rge C) Sign of the wave function 13.
D) Presence or absence of electron
Which of the following atomic orbitals does not have the four lobes lying symmetrically between axial directions
A) d xy
B ) dxz
C) d y z
D) d x2 y 2
The electrons, identified by quantum numbers n and l
14.
(i ) n 4, l 1
(ii) n 4, l 0 ( iii) n 3, l 2 ( iv) n 3, l 1 can be placed in order of
increasing energy, from the lowest to highest as. [
]
A) (i v ) < (i i ) < (i i i ) < (i )
B ) (ii ) < (iv ) < (i ) < (ii i)
C) (i) < (iii) < (ii) < (iv)
D) (iii) < (i) < (iv) < (ii)
15.
With what velocity should an - particle travel towards the nucleus of a c opper atom so as to arrive at a distance 10 - 1 3 m from the nucleus of the copper atom ? [ ]
A) 8.9 7 x 10 6 m/s
B) 89.7 x 10 6 m/s
C) 0.08 x 10 6 m/s
D) 0.009x10 6 m/s
16.
The quantum numbers
1 2
and
1 2
for the electrons spin represent
[
]
A) Rotat io n of the el ect ron in cl o ck wi s e and cloc k wi se di rect io n respe ctiv el y B) Rotation of the electron in Anti clock wise and clock wise direction respectively Page |
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NTSE SAT MATERIAL
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S R I G A Y A T R I
E D U C A T I O N A L
I N S T I T U T I O N S
C) Magnetic moment of the electron pointing up and down respectively D) Two quantum mechanical spin states which have no classical analogue 17.
The sum of the number of nuetron and proton in the isotope of hydrogen is[
A) 6 18.
B) 5
C) 4
D) 3
Decrease in Atomic number is observed during
A) A lpha emi ss ion
B) B eta emi ss ion
C) Electron capture
D) All the above
19.
Hund’s rule deals with the distribution of electrons in
A) A qu an tum she ll 20 .
B) A n orbi t
C) An orbi tal
[
]
[
]
D) De generate orbi ta ls
Which electronic level allows the hydrogen atom to absorb a photon but not emit a photon [
A) 2 S 21.
B) 3 S
]
C) 2 P
]
D) 3 D
Which of the following are example for polyatomic ion ? [
]
A) Co32
B ) NH 4
C) A & B
D) CH4
2
The orbital 3d z is symmetrical about
22.
A) X – a xi s 23.
B ) Y – axi s C) Z – axi s
]
[
]
[
]
D) All the above
d – orbital are
A) Fi v e f ol d dege n erate
B ) Four fold deg enerate
C) Three fold degenerate 25.
[ B ) Positi v el y charge d elec tron
C) Proton 24.
]
D) X Y - axi s
Neutrino is
A) E lec tron
[
D) Two fold degenerate
The number of orbitals in a quantum shell is equal to
A) n 2
D) 4 l 2
C) l
B) n
* * * ATOMIC STRUCTURE – LEVEL - II 1.
A
2.
A
3.
A
4.
C
5.
A
6.
C
7.
B
8.
A
9.
B
10.
A
11.
A
12.
C
13.
D
14.
A
15.
A
16.
D
17.
D
18.
D
19.
D
20.
A
21.
C
22.
C
23.
B
24.
D
25.
A
CHEMICAL BOND UNIT – 2(LEVEL-I) 1. Formation of chemical bond result’s in A ) dec re ase i n energy
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1 77
B) i ncre ase of energy
NTSE SAT MATERIAL
[ C) bot h A &B
]
D) No ne
CHEMISTRY
S R I G A Y A T R I
E D U C A T I O N A L
I N S T I T U T I O N S
2. The duplet structure is
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
A ) The el e me nt shou l d hav e t wo el ec trons in v al ence she ll B) The total number of electrons in the atom should be only 2 C) Both A&B
D) None
3. Octet rule was proposed by A) Koss el and le wi s
B) Linu s and pa ul i ng
C) Ruther ford
D) Neilsbohr
4. Which of the following elements would you expect to be chemically inert A ) He
B) Ne
C) A r
D) Al l the ab ov e
5. Number of pure orbitals in C 6 H 6 A) 12
B) 18
C) 6
D) 4
6. Number of hybrid orbitals in C 2 H 4 A ) 6
B) 4
C) 10
D) 4
7. Six electrons are mutually shared in A ) F 2
B) Cl 2
C) O 2
D) N 2
8. Octet rule is not followed in A ) Sf 6
B) PCl 5
C) BeCl 2
D) All the three
9. Silicon has 4 e In the outer most orbit in forming the bonds. A ) It gai ns e
B) It loses e
C) It shares e
D) None
of these 10.
Which of the following does not contain coordinate bond ?
A ) NH 4 11.
12.
B) 4
C) 2
13.
B) Perpend i cul a r
C) Equiv al en t
14.
B) P – P
C) S – P
15.
B) side – on
C) both
1 78
B) 2
]
[
]
[
]
D) No ne of the se
Number of sigma bonds in HCN molecule.
A) 3
[
D) Al l th e ab ov e
In BF 3 molecule which type of overlapping is present ?
A) end – o n – en d
]
D) No ne of the se
Overlapping in BeCl 2 molecule
A ) S – S
[ D) 5
Hybridization produces a set of orbitals which are
A ) Parall el
]
D) [Ag(CN) 2 ] +
In Ammonium Ion the covalency of nitrogen is
A ) 3
Page |
C) CH 3
B) H 3 o +
[
C) 4 NTSE SAT MATERIAL
[
]
D) 5 CHEMISTRY
S R I G A Y A T R I
E D U C A T I O N A L
I N S T I T U T I O N S
Number of bonds in C 2 H 2 molecule
16. A ) 3
B) 2
C) 6
A ) 6
B) 7
C) 2
A ) Cu, H 2 O 19.
B) H 2 O, Cu
C) Cu, O
B) Pyr amidal
]
[
]
[
]
[
]
D) Cu, H
Shape of BeF 2
A ) Angul a r
[ D) 3
Donor and Acceptor in [Cu(H 2 O) 6 ] + 2
18.
]
D) 4
Number of Co-ordinate bonds in [Fe(H 2 O) 6 ] + 2
17.
[
C) Li nea r
D) Tri gonal
bipyramidal 20.
P – P overlap is present in
A ) HF
B) Cl 2
KEY 1. A 11.
2. C B
12.
3. A C
13.
C) H 2
CHEMICAL BOND UNIT – 2(LEVEL-I) 4. D
C
D) HI
14.
5. A A
15.
6. A B
16.
7. D A
17.
8. D A
18.
9. C B
19.
C
10.
C
20.
B
CHEMICAL BONDING – UNIT – 2(LEVEL-II)
26.
During bond formation potential energy of the system.
A) I nc rease s 27.
B) Decreas es
C) Re ma i n the sa me
[
D) Ca n not predi cted
CO 2 is iso structural with
A) HgCl 2 28.
[
B) SnCl 2
C) NH 3
]
]
D) NO 2
An element ‘X’ has the ground state electronic configuration 2, 8, 8. The type of bond that exists between the atoms of ‘X’ is.
A) i o ni c 29.
B) cov al en t
[
C) me ta l li c
D) Vanes wa lli ’ s
Modern theory of valency was proposed by
A) K os sel
B) Le wi s
]
[ C) Koss el an d Lewi s
]
D) Born -
Haber 30.
Shape of IF 7 molecule is
A) Octah edral
32.
[
]
D) Tetrahedral
The bond angle sin PCl 5 molecule are
A) 90 0 , 180 0
]
B ) Pentag ona l bi pyr ami dal
C) Trigonal bipyramidal 31.
[
B) 120 0 , 180 0
C) 90 0 , 120 0
The coupling between, bare unit of DNA is through
D) 109 0 , 28 1 , 120 0 [
]
A) Hyd rogen b ondi ng B) El ectros tati c bond ing C) Covalent bonding D) Vander waali’s forces Page |
1 79
NTSE SAT MATERIAL
CHEMISTRY
S R I G A Y A T R I
33.
E D U C A T I O N A L
I N S T I T U T I O N S
Which one of the following is a correct set
A) H 2 O, SP 3 angular
[
]
D) CH 4 , dSp 2 , tetrahedral
What is the crystal structure of cesium chloride
A) B od y ce ntered cubi c
B) Face cente re d cubi c
C) Tetrahedral 35.
]
B) H 2 O, SP 2 , linear
C) NH 4 + , dSP 2 square planar 34.
[
D) Octahedral
An element ‘M’ reacts with chlorine to form a compound X. The bond angle in X is 120 0 . What is M ?
A) B e 36.
B) B
C) Mg
37.
B ) 2 3
]
[
]
D) N
Acetylene has ________bond.
A) 2 , 2
[
C) 3 ,2
D) 3 , 3
Which of one of the following molecule contains both ionic and covalent bonds ? [
]
A) CH 2 Cl 2 38.
B) K 2 S O 4
C) BeCl 2
D) SO 2
Which of the following statement is correct ?
[
]
A) The n umb er of el ec tron s p re sent i nt the v al en c y s hell of ‘ S’ i n SF 6 is 12 B) The rates of ionic reaction are very slow. C) According to VSEPR theory, SnCl 2 is the linear molecule D) The correct o rder of ability to form ionic compounds among Na + , Mg 2 + , and Al 3 + is A l 3 + 39.
> Mg 2 + > Na +
Which of the following statement is correct
(i)
Zn + + ion has pseudo inert gas configuration
(ii)
Electrovalency of Fluorine in AlF 3 is three
(iii)
Ease of formation of ions is Na + >K + >Cs +
A) B ot h (i ) & (i i )
B) B oth (ii ) & (iii )
[
C) B oth (i ) & (i i )
]
D) On l y
(i) 40.
Assertion : (A) : Solid NaCl is not an electrical conductor but molten NaCl is a good electrical conductor.
Reason : (R) The electrical conductivity of an ionic compound is due to the free movement of ions present in it. A) B ot h A and R are true. R i s the correc t exp l an ati o n of A B) Both ‘A’ and ‘R’ are true. R is not the correct explanation of ‘A’ C) A is true. R is false D) A is false R is true 41.
When three orbitals of two identical atoms overslap, the bonds formed are[
A) Th re e sigma bonds C) Three pi bonds 42.
Page |
B ) On e sigma an d two pi bonds D) two sigma and one pi bond
Bond angle depends on
A) A tomi c si ze 1 80
]
[
]
B ) Hyb ri dis ation NTSE SAT MATERIAL
CHEMISTRY
S R I G A Y A T R I
E D U C A T I O N A L
C) No of lone pair of electrons 43.
I N S T I T U T I O N S
D) All the above
Bond energy is least in the following
A) HF 44.
B) HCl
C) HB r
45.
B) Cov al ent bo n d
]
[
]
D) HI
The bond formed between a lewis acid and a lewis base is
A) I on i c bo nd
[
C) Da t ive bond
D) Hydrogen bon d
The structural formula of a compound is CH 3 -CH=C=CH 2 . The type of hybridization at the four carbons from left to right are
[
A) S P 3 , SP, SP 2 , SP 3
B) SP 2 , S P 3 , S P 2 , SP
C) SP 3 , SP 2 SP, SP 2
D) SP 3 , SP 2 , SP 2 , SP 2
]
KEY - CHEMICAL BONDING – UNIT – 2(LEVEL-II)
1)
B
2)
A
3)
D
4)
C
5)
B
6)
C
7)
A
8)
A
9)
A
10)
B
11)
C
12)
B
13)
A
14)
A
15)
A
16)
B
17)
D
18)
A
19)
C
20)
D
PERIODIC CLASSIFICATION OF ELEMENTS(LEVEL-1) I.
Choose the correct answer
25x1 = 25
1. Calium was discovered by A) Menda leef
B) Mos ley
B) Lo the r mayer
C) Dobe rei ner
B) Be- In
C) Al - Ga
B) K
C) Na
B) Zn
C) Ca
B) 92 .9
C) 32 .1
B) M2 S 3
C) M2 S
B) 12 7.6 , 1 26.9
C) 12 6.9 , 127 .6
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1 81
B) 6
[
]
[
]
[
]
[
]
[
]
D) 12 6.9 , 126 .9
9. In mendaleef’s periodic table element ‘Ta’ belongs to which period A) 2
]
D) MS
8. Atomic weights of Te, I A) 91 .2, 92.9
[
D) 19
7. Sulphide formulae of Ekasili con A) MS 2
]
D) Al
6. Atomic weight of Ekaboron A) 44
[
D) Mg
5. II B group elements in Mendeleef’s periodic table A) Cu
]
D) Co Ni
4. Octave at Li A) Be
[
D) Pett erkofer
3. By taking chemical properties into consideration, the atomic weights of the following elements were corrected. A) Boro n-sil icon
]
C) Debo si Baudr an D) Neil s B ohr
2. Second periodic table was drafted by. www.crsttp.blogspot.com A) Dechaco gr toi s
[
C) 5 NTSE SAT MATERIAL
D) 4 CHEMISTRY
S R I G A Y A T R I
E D U C A T I O N A L
I N S T I T U T I O N S
10.In Mendeleef’s periodic table element ‘Tc’ belongs to which group A) VI
B) V
C) II
B) 2
C) 3
B) One
C) Two
B) C
C) Ge
B) Ce
C) Th
B) He, F
C) He, Cs
B) bo nd orde r
C) Bond le ngt h
A) Number of bonds f or med by the At om
B) Natu re of the bon ding
C) Oxidation state of the Atom
D) All the above
18. If the radius of Fe +2 is 0.76A 0 the radius of Fe +3 is B) 0.76 A 0
C) 0.88 A 0
B) 5. 68 ev
C) 10 .88 ev
B) Bivalent
C) Triv alent
A) 2.8 greater than pauling sca le
B) 2. 8 les s tha n p auling scale
C) 3.5 greater than pauling scale
D) None of the above
22. Which of the following will have at most positive electron affinity B) O
C) Mg
B) Be
C) Li
A) St rong reduc ing age nts
B) Oxi disin g agents
C) Both
D) None of these
25. Units of I.P.
Page |
1 82
B) K. Cal / mol
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
D) Mg
24. The elements present on the left side of the periodic table
A) ev
]
D) S
23. The less electro positive element is A) Na
[
D) Tetravalent
21. Mulliken electro negativity values are
A) Cl
]
D) 5.48ev
20. Mulliken scale is applicable to A) monovalent
[
D) 1.08 A 0
19. If the ionization potential of Na is 5.48 ev, the IP of K will be A) 4.34ev
]
D) None of the se
17. Atomic radius depends upon
A) 0.64 A 0
[
D) Xe, F
16. Distance between two neighbouring atoms. A) At omi c radiu s
]
D) U
15. ‘X’ is most inert element and ‘Y’ is most reactive element in the long form of the periodic table ‘X’ and ‘Y’ are respective is A) H, F
[
D) Sn
14. An element of 5f-series but has no electrons filled in 5f – subshell A) Ac
]
D) Three
13.The element which belong to 3 rd period and IV A group of periodic tables is A) Si
[ D) 4
12. Number of outer shells partially filled for representative elements A) Zero
]
D) I
11. The period that contains only gaseous elements is A) 1
[
C) K. J / mol D) Al l the above
NTSE SAT MATERIAL
CHEMISTRY
S R I G A Y A T R I
E D U C A T I O N A L
I N S T I T U T I O N S
KEY - PERIODIC CLASSIF ICATION OF ELE MENTS (LEVEL-1)
1) C
2) D
3) B
4) C
5) B
6) A
7) A
8) B
9) B
10) A
11) A
12) B
13) A
14) C
15) D
16) C
17) D
18) A
19) A
20) A
21) A
22) C 23) B
24) A
25) B
PERIODIC CLASSIFICATION – UNIT – 3(LEVEL-II) 1. Which of the following is correct order of ionic radii. A) Na + < Mg 2 + < Al 3 + < Si 4 +
B) Al 3 + < Si 4 + < Na + < Mg 2+
C) Si + 4 < Al + 3 < Mg + 2 > Na +
D) Na + > Mg + 2 >Al + 3 > Si + 4
[
]
2. Let Electro negativity, ionization energy and electron affinity he represented as EN, IP and EA respectively. Which one of the f ollowing equation is correct according to Mulliken.
[
A) E N = IP XEA
B) E N = I P/ E A
C) E N =
IP EA 2
]
D) EN=IP-EA
3. The valence configuration of a transition element is (n-1)d 1 - 1 0 n s 1 - 2 . Here ‘n’ may be (i) 1 (ii) 2 (iii) 3 A) iv , v and v i
(iv) 4
(v) 5
(vi) 6
(vii) 7. The impossible values of ‘n’ are.[ ]
B) vi and v ii
C) i i , i v & v i
D) I, i i & ii i
4. Which of the following are the correct statement
[
]
i) First period is the shortest and sixth period is the longest period ii) 4 t h and 5 t h periods are short periods iii) the incomplete period is seventh period iv) the long periods are 4 t h and 5 t h periods. A) i , iii & iv
B) i i & iv
C) i & iii
D) i , ii , iii & iv
5. An element has nine positive charges in its nucleus its common oxidation state is [] A) + 7
B) + 5
C) – 1
D) + 1
6. Diagonal relationship is quite pronounced in the elements of A) 2 n d & 3 r d periods
B) 1 s t and 2 n d periods
C) 2 & 3 groups
[
D) 3 r d & 4 t h periods
7. Metals exhibiting higher oxidation state is in which block A) P
B) S
C) d
]
[
]
[
]
D) f
8. Which of the following elements posses zero electron affinity and zero electronegativity values ? A) ha logen s
B) Al kal i me tals
C) Ch al co gen s
D) rare gas es
9. The best oxidising agent among the following is A) Ox ygen 10.
C) Sodi um
The Ionisation potential of X - ( g ) is numerically equal to
A) E .A of X ( g )
Page |
B) Fl uorin e
1 83
B) E.A of X + ( g)
C) E.A of X - 2 ( g)
NTSE SAT MATERIAL
[
]
[
]
D) Co pper D) E.A of X 2 + ( g )
CHEMISTRY
S R I G A Y A T R I
11.
E D U C A T I O N A L
I N S T I T U T I O N S
A sudden large jump between the values of second and third I.E of an element would be associated with which of the electronic configuration.
A) 1S 2 2S 2 2P 6 3S 1
B) 1S 2 2S 2 2P 6 3 S 2 3 P 1
[
]
C) 1S 2 2S 2 2 P 6 3 S 2 D) 1S 2 2S 2 2 P 6 3 S 2 3P 3
In the isoelectronic species the ionic radii of N 3 - , O 2 - , F - are respectively given by
12.
[ A) 1.3 6, 1.40, 1 .71 13.
B) 1.36, 1 .71, 1.40
]
C) 1. 71, 1.4 0, 1. 36D) 1. 71 , 1.3 6, 1 .4 0
Lanthanide contraction is due to
[
A) Lo w n ucle ar cha rg e
]
B) Mo re ef f ecti v e shi el di ng by 5 f orbital s
C) Less effective sheilding by 4f orbitals
D) Inertness of the electron pair in 6S
If the quantum number of the highest energy electron in an atom are n=4, l =3,
14.
m=+3, S= + ½ , the element belongs to. A) p – bl oc k 15.
B) d – bl ock
[
C) f – bl oc k
]
D) s - bl oc k
From the elements of the following atomic numbers 9, 12, 16, 20, 39, 47 and 56 select representing a group of elements are.
A) 9, 1 6, 39 16.
B) 12, 20 , 47
[ C) 20, 39, 5 6
]
D) 12, 20, 5 6
The long form of periodic table is nothing but just a graphical representation of
____ princi pl e.
[
A) A uf b au 17.
B) Hunds
C) Pauli s exclusio n
]
D) W av e me c han i cs
The atomic weights of ‘Be’ and In were corrected by mandaleev using the formula. [
]
The atomic number of an element ‘X’ is ‘34’ . Then the element belongs to [
]
a (z-b)
A)
B) mvr = mvr
nh 2
C) Atomic weight = Equivalent weight X - valency D) Equivalent weight = Atomic weight X-valency 18.
A) 4 t h period & IVA group
B) 4 t h period and VI A group
C) 4 t h period and VII A group
D) 5 t h period and VI A group
The covalent radius of hydrogen is 0.37A 0 the bond length in H 2 molecule is [
19.
A) 0.1 85A 0 20.
B) 0.74 A 0
C) 1.48 A 0
]
D) 0.37 A 0
The first ionisation energy values of an element are 191, 578, 872 and 5692 K. Cals. The number of valence elements in the element are.
A) 5
B) 2
C) 3
[
]
D) 4
KEY - PERIODIC CLASSIFICATION – UNIT – 3 (LEVEL-II)
1)
C
2)
C
3)
D
4)
C
5)
C
6)
A
7)
C
8)
D
9)
B
10)
A
11)
A
2)
C
13)
C
14)
C
15)
D
16)
A
Page |
1 84
NTSE SAT MATERIAL
CHEMISTRY
S R I G A Y A T R I
17)
C
18)
B
19)
B
E D U C A T I O N A L
20)
I N S T I T U T I O N S
C
ALKALINE EARTH METALS (LEVEL-1) 1.
2.
3.
As compared to Alkali metals, alkaline earth metals A) Are more metallic
B) Have higher densities
C) Are stronger reducing
D) Have larger atomic radii
Metalic magnesium is obtained by
6.
D) Displacement of magnesium by Iron from MgCl2 solution
Among the Alkalive earth metals, the element forming predominatly covalent compound is [ B) Be
C) Chlorophyll
A) Prevent action of water and salt
B) Prevent puncturing by undr sea rocks
C) Keep away the sharks
D) Make the ship highly
Alkaline Earth metals show B) Monovalency
C) Variable valency
C) N2
B) CiAl (SiO3)
C) MgCl2. 6H2O
B) Sr
C) Ca
B) acidic
C) neutral
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
D) Be
11. The Natore of oxide of radium is A) basic
[
D) KCl MgCl26H2O
10. Which of the following elements has highest melting point A) Ba
]
D) O2
Carnalite is A) KCl
[
D0 Mg2N
A piece of Mg ribbon was heated to redness in an atmosphere of Nitrogen and on cooling water was added the gas evolved was. B) H2
]
D) Zero valency
Magnesium heated in the atmosphere of Nitrogen forms a nitride. The formula of the Nitride is C) Mg3N
[
D) Vitamin B 12
Several blocks of Mg are fixed to the bottom of ship to
B) Mg3N2
]
D) Ca
B) ATP
A) NH3 9.
C) S r
Magnesium is an important component of which biomolecule occurring extensively in living world
A) Mg N 8.
]
C) Electrolysis by Iron from MgCl2
A) Divalency 7.
[ B) Electrolysis of aqueous MgCl2
A) hemoglobin 5.
]
A) reduction of Mgo with coke
A) Ba 4.
[
D) Amphoteric
12. BeF2 is soluble in water, whereas the fluorides of after alkaline earth metals are insoluble because of A) Ionic waterof BeF2
B) Greater hydration energy of Be +2
C) Covalent nature of BeF 2
D) None
13. Which of the following is most soluble in water A) MgSO4
B) CaSO4
14. In the RXn, Be + 2NaoH A) Be(OH)2
A
C) SrSO4
D) BaSO4
+ H2 A is
B) BCO
C) Na2BeO2
D) None of these
15. An hydrous MgCl2 may be obtained by heating MgCl 2 MgCl26H2O. A) Untill it fuses B) With lime
C) with coap
D) In a current of dry HCl
16. Ordinary black board chalk is made of A) CaCO3
B) Gypsum
C) Fluorspar
17. The metal that is extracted from sea water Page |
1 85
NTSE SAT MATERIAL
D) Calcium phosphate
CHEMISTRY
S R I G A Y A T R I
A) Mg
E D U C A T I O N A L
B) Be
I N S T I T U T I O N S
C) Ca
D) Sr
18. Barium burn is excess of oxygen forming A) Bao
B) Ba2O2
C) Ba)2
[
]
[
]
[
]
[
]
[
]
[
]
D) Ba2O
19. The IP1 of Be and B respectively are (ev) A) 8.29, 9.32
B) 9.32, 9.32
C) 8.29, 8.29
D) 9.32, 8.29
20. R1 pening of fruits can be carried Zn presence of A) Na2SO4
B) NaCl
C) CaCl2
D) CaC2
21. Alkaline earth metals are A) A m photene B) reducing a gerf
C) Oxidising agent
D) Acid
22. The number of covalent bonds formed by ‘Be’ A) 2
B) 3
C) 4
D) 5
23. Salt used as a purgative is A) NaCl
B) MgSO4
C) MgCl2.6H2O
D) Ca3 Al2O6
K E Y - A L K A L I N E E A R T H M E TA L S – L e v e l - 1
1.
B
2.
C
3.
B
4.
C
5.
A
6.
A
7.
B
8.
A
9.
D
10.
D
11.
A
12.
B
13.
A
14.
C
15.
D
16.
B
17.
A
18.
C
19.
D
20.
D
21.
A
22.
A
23.
B ALKALINE EARTH METALS( LEVEL-II)
1. A substance which give a brickred flame and breaks down on heating giving oxygen and brown gas is
[
A) CaCO 3
B) MgCO 3
C) Mg (NO 3 ) 2
]
D) Ca (NO 3 ) 2
2. Which of the following pairs of substances gives same gaseous product on reaction with water ?
[
A) Na & Na 2 O 2 3. Be 2 C + H 2 O
Beo
CaC 2 + H 2 O Mg 2 C 3 + H 2 O x, y
B) Ca & CaH 2
D) Ba & BaO 2
+ x
Ca(OH) 2 Mg
C) Ca & Cao
]
+ y
(OH) 2 + z
and z are respectively
A ) CH 4 , C 2 H 2 , C 3 H 8
B) CH 4 , C 2 H 6 , C 3 H 8
C) CH 4 , C 2 H 2 , C 3 H 4
D) C 2 H 2 , C 2 H 6 , C 3 H 4
4. X + C + Cl 2 Y + 2H 2 O
Z
High Temp y
+ Co
+ 2HCl
Compound y is found in polymeric chain structure and is an electron deficient molecule. The compound y is A) B eo
Page |
1 86
B ) BeCl 2
[ C) Be (OH) 2
NTSE SAT MATERIAL
]
D) Be (OH) 2
CHEMISTRY
S R I G A Y A T R I
5. Mg
Air x Heat
+ y
E D U C A T I O N A L
H O H O Z solution 2
2
I N S T I T U T I O N S
C SO A 4
s ubs ta nce x, y, z and A are
respectively
[
]
A) Mg 3 N 2 , MgO, NH 3 , CUSO 4 , 5H 2 O
B) Mg (NO 3 ) 2 , MgO, H 2 , CUSO 4 , 5H 2 O
C) Mg 3 N 2 , Mgo, NH 3 [CU(NH 3 ) 4 ] S O 4
D) Mg (NO 3 ) 2 , MgO, H 2 O 2 , CUSO 4 , 5H 2 O
6. An Alkaline earth metal gives a salt with Chlorine which is sparingly soluble in water at room temperature but fairly sol uble in boiling water. It als o forms a sulphate whose mixture with a sulphide of transition metal is called “Lithopone” and is used as a white pigment. The Alkaline earth metal is. A) Ca
B) Mg
C) Sr
]
[
]
D) Ba
7. The hydration energy of Mg + 2 Ion is A) Mo re than that of Mg + 3 Ion
[
B) More than that of Na + Ion
C) More than that of Al + 3
D) More than that of Be +2 Ion
8. A metal ‘M’ readily forms water soluble sulphate and water insoluble hydroxide, McoH) 2 . It’s o xide Mo, is amphoteric, hard and possesses high melting point. The hydroxide is also Amphoteric in natux. The alkaline earth metal ‘M’ must be. [ A) B e
B) mg
C) Ca
]
D) Ba
9. A sodiu m salt on treatment with MgCl 2 gives white precipitate on heating. The anion of the sodium salt is. A) HCO 3 -
B) CO 3 - 2
C) SO 4 - 2
B) CaCN 2
C) Ca(CN) 2 + C
B) BaSo 4
C) CaCl 2
[ B) NaCl
C) Ca Si O3
]
[
]
D) Ca (OH) 2
12. Formula of sylvine A) K Cl
[
D) CaCN 2 + C
11. Formula of hydro lith A) CaH 2
]
D) NO 3 -
10. The formula of a compound of Ca, C and N used as a fertilizer is A) Ca (CN) 2
[
]
D) MgSO 4 . 7H 2 O
13. Which alkaline earth metal forms a well known synthetic reagent for organic compound A) B e
[ B) Mg
C) Ca
D) Sr
14. Which reagent is used to anlyse Ca + 2 and Mg + 2 quantitatively. A) E DTA
B) RMg X
C) Li Al H 4
[
[
B) Be (OH) 2
C) Ca (OH) 2
B) CaCl 2
C) MgCl 2
[
B) Mg o
C) Ca o
Page |
1 87
B) cc p
C) b. c.c . NTSE SAT MATERIAL
[
]
[
]
D) No ne
18. Crystal structure of Be A) hc p
]
D) BeCl 2
17. Which is more reactive (with H 2 O) A) B eo
]
D) Ba (OH) 2
16. The compound which having more lattice energy ? A) S rCl 2
]
D) None
15. Philips milk of magnesia is A) Mg ( OH ) 2
]
D) f cc CHEMISTRY
S R I G A Y A T R I
E D U C A T I O N A L
I N S T I T U T I O N S
19. Formula of hydrone A) Mg ( Cl O 4 ) 2
[ B) MgCO 3
C) MgO
]
D) MgCl 2
20. The substance not likely to contain CaCO 3 is. A) do lami te
B) sc a shel l
[
C) cac i ned g yp s um
]
D) ma rbl e statue
ALKALINE EARTH METALS (LEVEL-II) 1)
C
2)
B
3)
C
4)
B
5)
C
6)
D
7)
B
8)
A
9)
A
10)
D
11)
A
12)
A
13)
B
14)
A
15)
A
16)
D
17)
C
18)
A
19)
A
20)
C
SOLUTIONS – UNIT – 5(LEVEL-I) 1. A solution of known concentration is known as A) mol ar sol uti on
B) normal sol uti on
[ C) mo l e solu ti on
D) st and ard sol uti on
2. Which is a true solution A) NaCl in SO 2
[
B) Cu in Ag
C) Salt in petrol
A) 10 00 gm of th e s ol v ent
B) one l i tre of the s ol v ent
C) One litre of the solution
D) 22.4 litres of the solution
w v
A) 0.1
solution of NaoH is B) 0. 5
C) 0. 001
[
]
[
]
D) 1.0
5. If 36.0 gr of glucose is present in 400 ml of solution, molarity of the solution is[ A) 0.0 5 M
B) 11. 0 M
]
D) Mud in water
3. A molar solution is one that contains, one mole of a solute in
4. Molarity of 4%
]
C) 0.5 M
]
D) 2.0 M
6. Amount of sulpuric acid present in 400 ml of 0.1 M acid solution is.
[
]
[
]
8. 10 milli moles of solute is present in the following volume of 0.08 M solution. [
]
A) 2.4 5 gm
B) 3. 92 g m
C) 4. 9 gr
D) 9.8 gr
7. The number of moles of solute present in 2 lits of 0.5 M NaoH solution is A) 2
A) 25 ml 9. The molarity of 15% A) 1.2
B) 1
C) 4
B) 625 ml
C) 500 ml
w solution v B) 1. 4
D) 0.1
D) 100 ml
of H 2 S O 4 of density 1.1 g/cc is approximately.[ C) 1. 8
D) 1.68
Number of moles in 1 litre of pure water 4 0 C
10.
A) 18 11.
B) 55.55
C) 5. 55
]
[
]
D) 36
0.004 M Na 2 SO 4 is isotonic with 0.01 M glucose. Degree of dissociation of Na 2 SO 4 is
[
A) 75 %
B) 50%
C) 25%
D) 85%
12.
What is the molarity of 13% solution (by weight) of sulphuric acid with density of 1.05 g/ml.[
Page |
1 88
NTSE SAT MATERIAL
]
]
CHEMISTRY
S R I G A Y A T R I
A) 1.3 5 M 13.
E D U C A T I O N A L
I N S T I T U T I O N S
B) 13. 5 M
C) 0.135 M
D) 0.00135 M
How many moles of electron weigh one kilogram ?
A) 6.0 23x1 0 2 3 14.
B)
1 9.105
1031
C)
6.023 9.018
[
1054
D)
1 9.108 6.023
]
108
How many milli litres of 0.5 M H 2 S O 4 are needed to dissolve 0 .5 gr CuCO 3 ?
CuCO 3 + H 2 SO 4
CuSO 4
A) 8.0 97 ml 15.
[
]
[
]
+ H 2 O + CO 2
B) 80.97 ml
C) 800. 9 ml
D) No ne
Units for weight present
A) gm of sol ute / 10 gm of s ol un
B) gm of sol u te / ci tres of sol uti on
C) moles of solute / liters of solution
D) moles of solute / kilo grams of
solvent 16.
Concentration of solution is
[
A) I nte nsi v e prop e rty
B) E xtensi on p ro perty
C) Both
D) None
17.
]
A laboratory bottle is labeled 12M HCl. How would you make from this 20. C.C of a 3.0 M HCl. Solution.
[
]
A) B y a dditi on of 0. 5 C.C of wa ter B) By addition of 5 C.C of water C) By addition of 50 C.C D) None of these 18.
3 Cl 2 + 6 NaOH
5
NaCl + NaClO 3 + 3H2o. How many liters STP of Cl 2 gas will
react with 75 C.C of 1.6 M NaOH? A) 1.3 41 19.
B) 13.41
[ C) 134. 1
]
D) 134/
How many milli liters of 0.3N H 2 SO 4 are required to neutralize 60 ml of 0.62 N NaoH ?
[
A) 26 .9 ml 20.
B) 27 ml
C) 29 ml
]
D) 40 ml
3.65 gr of HCl are dissolved in 16.2 g of water find the mole fraction of HCl. [
]
A) 0.1 21.
12%
B) 0. 9
w aqueous v
C) 0. 2
D) 0.25
solution has a density of 1.2 g/ml. What are the mole fraction
of the components? (mol. Wt of solute as 4O) A) 0.0 476 , 0.9524 22.
B) 0. 9524, 0.0 476
[ C) 0. 5, 0.5
]
D) No ne
A solution contain 90gr of H 2 O, 6.4 gr of methanol and 18.40 gr of glycerol. What is the mole fraction of glycerol.
A) 0.0 37
B) 0. 063
C) 0. 5
23.
Electrolysis of Aq K 2 S O 4 product at cathode.
Page |
1 89
NTSE SAT MATERIAL
[
]
[
]
D) 0.1
CHEMISTRY
S R I G A Y A T R I
A) H 2 24.
E D U C A T I O N A L
I N S T I T U T I O N S
C) 21C +
B) O 2
D) SO 4 - 2
Electrolysis of Aq CuCl 2 product at cathode.
A) Cu 25.
B) H 2
C) Cl 2
B) Aq. NaCl
]
[
]
D) O 2
Brine solution is
A) NaCl
[
C) Na OH
D) Na 2 C O 3
KEY - SOLUTIONS – UNIT – 5 (LEVEL-I)
1) D
2) B
3) C
4) C
5) C
6) B
7) B
8) A
9) D
10) B
11) A
12) A
13) D
14) A
15) B
16) A
17) A
18) A
19) A
20) A
21) A
22) A
23) A
24) A
25) B S OLUTIONS
1. 2. 3.
4. 5. 6.
7. 8. 9. 10. 11. 12.
13. 14. 15.
(L EVEL – II)
How many types of solutions are formed ? (based on solute and solvent) [ A) 9 B) 6 C) 4 D) 3 Copper dissolved in gold is example for [ A) Gaseous B) Liquid solutions C) Solid D) None Ethanol dissolved in water is example for [ A) Liquid solutions B) Solid solutions C) Gaseous solutions D) None Chloroform mixed with Nitrogen gas. In this solution solute and solvent are [ A) Gas, Gas B) Liquid , gas C) Solid, gas D) Solid, liquid 50 gm of alcohol is added to 50 gm of water. I this solutin solute and solvent are [ A) Alcohol, water B) Water, alcohol C) both D) None Chemical name of ‘hypo’ [ www.crsttp.blogspot.com A) Sodium sulphate B) Sodium thiosulphite C) Sodium thiosulphate D) Sodium tho sulphide Formulae of cerous sulphate [ A) Na2 S 2 O3. 2H2) B) Ce2 (SO4)3. 9H2O C) CeSO4 D) CE2 (SO4)3 10 gm of NaCl present in 120 gm of aqueous solution weight percentage is [ A) 8.33 B) 83.3 C) 0.833 D) 0.0833 15ml of hexane is mixed with 45 ml with ml at Cl 4 volume percentage is [ A) 25 B) 35 C) 45 D) 55 Calculate the molarity of a solution containing 5 gr of NaoH in 450 ml solution [ A) 0.278 M B) 2.78 M C) 0.0278 M D) 3.5M Calculate molary of 2.5 gr of CH3COOH in 75 ml bezene [ A) 0.556 m B) 5.56 m C) 55.6 m D) None A semi molar solution is the one, which contains [ A) 1 mole solute in 2 litres B) 2 moles solute in 2 litres C) 0.1 mole solute in 1 litre in 1 litre D) 2 moles solute in 2 litres Molarity 4% (w/u) solution of NaoH is [ A) 0.1 B) 0.5 C) 0.001 D) 1.0 The male fraction of NaCl in a solution containing 1 mole of NaCl is 1000 gr at water is [ A) 0.001 B) 0.0177 C) 0.5 D) 0.244 A solution contains 1 mole of alcohol and 4 moles of water. The mole fraction of water is [
Page |
1 90
NTSE SAT MATERIAL
] ] ]
] ] ]
] ] ] ] ] ]
] ] ]
CHEMISTRY
S R I G A Y A T R I
1
A) 16.
E D U C A T I O N A L
B) 4
4
C)
I N S T I T U T I O N S
4
1
D)
5
5
The mole fraction of solute in 10% aqueous NaoH solution is A) 0.1
B) 0.05
C)
1
]
[
]
[
]
[
]
[
]
D) 0.075m
21
17.
Strong electrolyte is A) NaCl B) KOH C) NaNO3 D) CaCl2 18. Based on the solubility, solutions are divided into how many types A) 3 B) 1 C) 2 D) 4 19. Which of the following independent on temperature. A) Molarity B) Mole fraction C) Solubility D) None 20. Units of molarity A) mol/lit B) mol.ut-1 C) M D) All the above
KEY S OLUTIONS
[
L EVEL - II
1)
A
2)
C
3)
A
4)
B
5)
C
6)
C
7)
B
8)
A
9)
A
10)
A
11)
A
12)
A
13)
D
14)
B
15)
C
16)
C
17)
A
18)
A
19)
B
20)
D
Acid, Base and salts – LEVEL-1 1.
According to arhenious theory strong acid is A) Acetic acid B) Phosphonic acid H 2. P is defined as A) – log [H+] 3. 4.
5. 6. 7. 8. 9. 10.
11.
B) – log
1 [H ]
C) Carbonic acid C) log [H+]
1 91
NTSE SAT MATERIAL
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
D) Sulphuric acid
D) log
1 [H ]
Methyl orange (indicator) gives the following colour in acidic solution A) Red B) Yellow C) Green D) Blue The heat of neutralization of a solution of a strong base (NaOH) and weak acid (CH3Coo) is ____ K.cal .mole -1 A) 13.7 B) 13.4 C) 12 D) 13.0 H What is the P of HCl solution whose strength is 0.01 m A) 1 B) 2 C) 3 D) 4 ______ is formed when a water molecule gains a proton A) OHB) H2 C) H3O+ D) H3OWhich of them is strong acid A) CH3COOH B) H3 PO4 C) Zn (OH)2 D) H2SO4 Which of the following is a strong base A) NH4OH B) Mg (OH) 2 C) Ca (OH)2 D) KOH Mention the class of compounds that form when metallic oxides react with water. A) Acids B) Bases C) Salts D) Neutral solutions The product of hydrogen ion concentration and hydroxyl ion concentration in water is known as A) Equilibrium constant B) PH C) Ionic product of H2O D) Solubility product of H2O Mention the formula of a gas evolved when Na 2CO3 Salt reacts with HCl acid
Page |
[
CHEMISTRY
S R I G A Y A T R I
12.
13. 14.
15.
16. 17. 18. 19. 20.
E D U C A T I O N A L
I N S T I T U T I O N S
A) H2 B) O2 C) CO D) CO2 Mention the concentration of [OH ] in solution if the concentration of [H +] ions in the same solution at 25 0C is 10-5 [ -5 -7 -9 A) 10 B) 10 C) 10 D) +5 Mention the hydrolysis product f N2O5 [ A) HNO2 B) HNO3 C) NH4OH D) H2N2O2 Extent of ionization of water increases with [ A) Increase in concentration B) Increase in dilution B) Increase in temperature D) None The extent of ionization of weak acid increases with [ A) Increases in concentration B) Increases in dilution C) Increases in temperature D) None The unit of Kw [ 2 2 2 2 A) mole / lit B) mole / lit C) mole / lit D) mole / lit H The human body fluid with P >7 [ A) Gastric juice B) Saliva C) Blood D) Urine Kw changes with changing [ + A) [H ] B) [OH ] C) temperature D) Pressure The acidic oxide is [ A) Na2O B) MgO C) CaO D) SO2 + 0 The approximate [H ] value when id HCl is added to H2 OI at 25 C [ -4 -7 -8 -4 A) 10 B) 10 C) 10 D) 10
] ] ]
]
] ] ] ] ]
KEY - Acid, Base and salts-LEVEL-1 1)
D
2)
A
3)
A
4)
A
5)
B
6)
C
7)
B
8)
C
9)
B
10)
C
11)
D
12)
C
13)
B
14)
B
15)
B
16)
B
17)
C
18)
C
19)
D
20)
B ACIDS - BASES – SALTS - LEVEL - II
1. The strongest acid of the following is A) HCl
B ) H2S O 4
C) Hclo 4
B) 2
C) 3
B ) N 3H
C) N 2 H 4
B ) H 3P O 4
C) H 4 P 2 O 7
4
6. C 6 H 6 + HNO 3 Page |
1 92
B ) H 2 P O H SO
2 4
[
]
C) N H 4
C 6 H 5 N O 2 + H 2 O in this reaction HNO 3 i s NTSE SAT MATERIAL
[
]
[
]
[
]
D) H 3 P O 3
5. Identify the species that is amphiprotic A) H I
]
D) All of these
4. Which is tribasic acid ? A) H 3 PO 2
[ D) 4
3. Which of the given hydride of the nitrogen is acidic in nature ? A) NH 3
]
D) H 3 P O 4
2. Dissociation of H 3 P O 3 occurs in _______stages A) 1
[
2
D) C O 3
CHEMISTRY
S R I G A Y A T R I
A) P roton do nor
E D U C A T I O N A L
I N S T I T U T I O N S
B) Proton Accep tor
C) A mp hi proti c
C)
Ap ro ti c 7. At 25 0 C the P H o f a 1 0 - 8 molar solution of HCl in water is A) 8
B) – 8
[
C) bet we en 7 & 8
]
D) be we en 6 &
7 8. Water has p k w = 13.26 at 50 0 C. It’s p H will be A) 6
B) 7
C) 6.63
B ) 1.0
]
[
]
D) 13.26
9. The p H of 0.1 M acetic acid (k a = 1.8 x 10 - 5 M) is A) 0.1
[
C) 1.87
D) 2.87
10. 10 - 5 M HCl solution at 25 0 C is diluted 1000 times the p H of the solution will[ ] A) be equ al t o 8
B) l ie be t we en 7 & 8
C) lie between 6 & 7
D) remain unchanged
11. The con centration of H 3 O + of pure water at 90 0 C is 10 - 6 M. At this temperature, it’s p k w will be A ) 6
B) 12
C) – 6
[
]
[
]
[
]
[
]
D) – 12
12. The p H of 0.1 solution of the following salts increases in the order A) NaCl < NH 4 Cl < NaCN < HCl
B) HCl < NH 4 Cl < NaCl < NaCN
C) NaCN < NH 4 Cl < NaCl < HCl
D) HCl < NaCl < NaCN < NH 4 Cl
13. The pink colour of phenolphthalein in alkaline medium is due to A) The a ci di c f orm of ph enolphthalein B) The anionic form of phenolphthalein C) OH - of the base D) The non – conjugated structure of phenolphthalein 14. Conjugate base of [Al(H 2 O) 6 ] + 3 i s A) [ Al (H 2 O) 5 ] + 2
B) [Al(H 2 O) 5 ] O H ] + 2
C) [Al(H 2 O) 4 (OH) 2 ]=3
D) None
15. The amino acid glycine exists predominantly in the form N +H3CH2Coo-. It’s conjugate base is [ A) N + H 3 C H 2 CooH
B) NH 2 CH 2 Coo -
C) N + H CH 2 Coo -
D) NH 3 CHCoo -
16. p H of 0.10 M NH 3 solution A) 2.8 7
B) 11.13
C) 14
B) 10 - 3
C) – 3
B) 11
C) 13
19. p H range of methyl orange indicator A) 0.3 – 18
B) 2. 8 – 3 .8
C) 2. 8 – 4.8
]
[
]
[
]
[
]
D) 10
18. What is p H of a 500 ml aqueous solution containing 0.050 mol. Of NaOH ? A) 3
[ D) 10
17. If [H + ] p H = 3 for HCl solution what is [H + ] A) 3
]
D) 5
D) 3.8 – 6.1
20. Calcula te the p H of an aqueous solution of 1 M ammonium format assuming complete dissociation. (p k a of formic acid = 3.8, p k b of ammonia = 4.8) Page |
1 93
NTSE SAT MATERIAL
CHEMISTRY
S R I G A Y A T R I
A) 7
E D U C A T I O N A L
B) 6. 5
I N S T I T U T I O N S
C) 2. 8
D) 5.6
21. In I lewis base is
[
3
A) I 2
B) I
C) I
2
22. SnCl 4 + 2 Cl -
SnCl 6
A) S p 3 , S p 3 d 2
-2
D) I -
2
hybridization of Sn in SnCl 4 and SnCl 6 - 2 are respectively
B) dsp 2 to Sp 3 d 2
C) Sp 3 , S p 3 d 3 C) NH 4 +
B) NH 2 OH
B) K 2 S O 4
C) NaHCO 3
D) N
25. Which is an insoluble carbonate ? A) NO 2 CO 3
B) CaCO 3
[
]
[
]
D) N 2 H 4
24. Which is not an acidic salt A) NaHS O 4
[]
D) Sp 3 t o d 2 Sp 3
23. The conjugate acid of NH 2 - is A) NH 3
]
H4H2 P O4 [
C) K 2 Co 3
]
D) (NH 4 ) 2 C O 3
ACIDS - BASES – SALTS - LEVEL – II 1 )
C
2 )
B
3 )
B
4 )
B
5 )
B
6 )
B
7 )
C
8 )
A
9 )
D
1 0 )
C
1 1 )
B
1 2 )
B
1 3 )
B
1 4 )
B
1 5 )
B
1 6 )
B
1 7 )
B
1 8 )
B
1 9 )
B
2 0 )
B
2 1 )
D
2 2 )
A
2 3 )
A
2 4 )
B
2 5 )
B 7. CHEMISTRY OF CARBON COMPOUNDS (LEVEL-I)
1.
Which type of coal is having highest percentage of carbon A) Peat B) Lignite C) Anthracite 2. Alkenes undergo these reaction A) Substitution B) Addition C) Condensation 3. Carbon compounds which react with Tollen’s reagent A) Alcohol B) Aldehyde C) Alkane 4. Ketone among the following is
5. 6. 7. 8. 9. 10.
1 94
NTSE SAT MATERIAL
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
D) Bituminous D) Elimination D) Alkene
A) B) C) D) The C-C bond length in graphite A) 1.2 A0 B) 1.3 A0 C) 1.54 A0 D) 1.42 A0 When acetylene is passed thorugh a red hot tube on polymerization ____ is formed A) C6H6 B) C2H4 C) C4H10 D) CH4 The ester which removes nail polish A) Ethyl acetate B) Amyl acetate C) Vinegar D) Methyl acetate The domestic gas cylinder contains a mixture of hydrocarbons, predominantly A) Methane B) butane C) propene D) ethane The gas used for artificial ripening of fruits is A) Ethane B) Ethene C) Acetylene D) Methane How is the arrangement of carbon atoms in graphite
Page |
[
CHEMISTRY
S R I G A Y A T R I
11. 12. 13. 14. 15. 16.
17. 18.
E D U C A T I O N A L
I N S T I T U T I O N S
A) Tetrahdral B) Hexagonal C) Petagonal D) Petagonal & Hexagonal Hydrolysis of Aluminium carbide give [ A) Ethane B) Methane C) Butane D) Ethene Allotrope of carbon used as glass cutters [ A) Coke B) Diamond C) Graphite D) Carbon black The compound which forms silver mirror when treated with ammonical silver nitrate is [ A) Alcohol B) Aldehyde C) Ether D) Ketone The product obtained when ethylene reacts with hydrogen is [ A) C2H2 B) C2H4 C) C2H6 D) C2H5OH An example of aromatic hydrocarbon is [ A) Ethane B) Propane C) Benzene D) Acetylene Which pair of compound are isomers [ A) CH3 CH2 CH3& CH2=CH CH3 B) CH2=CH2 & CH3CH3 C) CH3OCH3& CH3COCH3 D) CH3COH3& CH3CH2CHO Petrol belongs to this group [ A) Alkanes B) Alkenes C) Alkynes D) Alkyle The refractive index of diamond is [ A) 2.41 B) 2.81 C) 1.72 D) 2.2 H O
2 19. CH3-CH2-CH=CH-CH3+O3 _________ Zn
A) CH3-CH2-CHO & CH3CHO C) 2 mole of CH3CHO 20. Fehling’s test is to detect A) Ketones B) Aldehydes
] ] ] ] ] ]
] ]
[
]
[
]
B) 2 mole of CH3CH2CHO D) CH3-CH2-CH=CH-CH3 C) Alcohols
D) Amines
KEY - 7. CHEMISTRY OF CARBON COMPOUNDS (LEVEL-I) 1)
C
2)
B
3)
B
4)
A
5)
C
6)
A
7)
A
8)
B
9)
B
10)
B
11)
B
12)
B
13)
B
14)
C
15)
C
16)
D
17)
A
18)
A
19)
A
20)
B
CARBON AND IT’S COMPOUND – (LEVEL-II) 1. Molecule in which the distance between the two adjacent carbon atoms in largest is [] A) eth ane
B) et hene
C) et hyn e
D) benzene CH 3
2. The IUPAC name of the compound having the formula H3 C C
CH 3
CH CH 2
is [
]
[
]
[
]
A) 3, 3 , 3 – t riethyl – 1 – prop ene B ) 1, 1, 1 – tri meth yl – 2 – p rope ne C) 3, 3 – dimethyl – 1 – butene
D) 2, 2 – dimethyl – 3 - butene
3. The IUPAC name of the compound H 2 C = CH – CH (CH 3 ) 2 A) 1, 1 – dimet hyl – 2 propane
B ) 2 – Vi nyl propa ne
C) 3 – methyl – 1 – butene
D) 1 – Iso propyl ethene
4. The IUPA name of the Page |
1 95
is NTSE SAT MATERIAL
CHEMISTRY
S R I G A Y A T R I
E D U C A T I O N A L
A) Chlo ro prop ane
I N S T I T U T I O N S
B ) Chl oro cycl o prop ane
C) Chlor butane
D) A & B
5. The IUPAC name of
K is
A) Te rt i a ry buta ne
[
]
D) Neo butane
6. What is ‘X’ in the following sequence of reactions.
A) Me than oic aci d Ak . KOH
]
B ) 2, 2 – Di methyl prop ane
C) Neo pentane
7. B C2 H 5 Cl
[
Na NaoH y CH 4 1 cao H 2 2
B ) Ethano i c ac id zn cu A C H OH 2
5
C) Pro pane D) Me th ane
here A and B are respectively
A) CH 4 , C 2 H 4
B ) C2H 4, C 2 H6
C) C 2 H 6 , C 2 H 4
D) C 2 H 6 , CH 4
[
]
8. Ethylene is converted to ethane in the presence of Ni at 300 0 C in this reaction the hybridisation of carbon changes from. A) S P t o S P 2
[
B) SP 2 to SP 3
9. CH 3 – I + 2 Na + I – CH 3
C) SP 3 to SP
]
D) SP t o SP 3
C 2 H 6 + 2NaI. What is the minimum quantity of methyl iodide
required for preparing one mole of ethane by wurtz reaction (At. Wt. Of Iodine=127) A) 14 2 gm
B) 568 g m
C) 326 gm
D) 2848 g m
10. In the complete combustion of ethane the number of oxygen molecules required is [] A) 2
B) 7
C)
5 2
D)
7 2
11. Order of rate of rate of reaction of ethane with halogenes is A) I > B r > Cl > F
B) Cl > I > B r > F
[
C) CI > Br > F > I D) F > CI > Br > I.
12. In the following reaction A and B respectively are A) Cl 2 / UV light and C 2 H 6
B) PCl 3 and C 2 H 4
C) HCl and C 2 H 6
D) Cl 2 and C 2 H 2
13.
The bond present in ethylene molecule are
A) 2 s i gma, 2 pi
B) Paraf f ins
C) Acetyl enes
15. Olefiant gas is the other name of B) et hene
C) ethyn e
16. Lindlar’s catlyst is used for controlled A) Oxi d at ion C) Halogenation Page |
1 96
]
[
]
[
]
[
]
D) 3 sigma, 2 pi
14. Common name of alkenes is
A) eth ane
[
B) 5 si g ma , 1 pi
C) 4 sigma, 2 pi
A) Olefi n s
]
D) Are nes
D) ethyl chl orid e [
]
B ) Hyd roge nat ion D) Dehydration NTSE SAT MATERIAL
CHEMISTRY
S R I G A Y A T R I
E D U C A T I O N A L
I N S T I T U T I O N S
17. 1, 2 – dibromo ethane on heating in presence of zinc gives the following. A) eth ane
B) et hyl ene
C) Acetyl ene
[
]
D) me th ane
18. Polythene is obtained by the polymerization of
[
A) S tyre ne
B) A mi x ture of ethyl en e & s tyr en e
C) Acetylene
D) Ethene
]
19. Ethylene reacts with Br 2 in Cci 4 to form X when ‘X’ is reacted with alcoholic KOH. Y is formed. Here X and Y are
[
A) B rCH 2 – CH 2 Br and C 2 H 2
]
B) C 2 H 5 Br and C 2 H 4
C) C 2 H 5 Br and C 6 H 6
D) C 2 H 3 B r 3 and C 2 H 4
20. In the following reaction, A and B respectively are, A
Hbr
C 2 H 5 Br
B
A
[ A) C 2 H 4 and Alcoholic KOH/
Alcoholic KOH
21. CH 3 – CH 2 Cl A) A c etyl en e
B) C 2 H 5 Cl and Aqueous KOH/
C) C 2 H 5 OH and Aq KOH/
D) C 2 H 2 and Br 2
A
Br / CCl 2
4
B) Et hyl e ne
zn / Alcohol
B
C. C is
C) Ethane
Alc KOH H Br y compound
22. C 2 H 5 Cl
[
B) dehydrohaloge na ti on
C) halogenat ion
D) dehalogena tion
23. Which of the following possess acidic hydrogen B) C 2 H 4
C) C 2 H 2
25. CaC 2 H 2 O
B) Huck l e’ s A
+ B
A) 1 – bu tene
Na
C
C) Faraday’s
C H I D . 2
5
B) Propene
D is
C) 1 – pen te ne
B) 1.39 A 0
C) 1.54 A 0
28. H – C
B) 6
C
– H
HCl
A) OR LON H 2O 29. CaC 2 A A) C 6 H 6 30. C 2 H 5 OH + Na
A
C) 4 Polymerisation
B) PV C
Red hottube
A) C 2 H 5 O Na, H 2
C) C 6 H 5 Cl
A + B A and B are B) C 2 H 5 ONa,
1 2
]
[
]
[
]
[
]
[
]
D) 1.20 A 0
D) TE FLON
D) C 6 H 5 -SO 3 H [
H 2
]
D) 1 - batyn e
B the polymer ‘B’ is
C) NYL ON C ‘C’ is
B) C 6 H 5 NO 2
[
D) 14
C l2 F eC l3
B
]
[
27. The total number of electrons present in the benzene are A) 2
[
D) Ma rk oni koff ’ s
26. Bond length of C – C in benzene A) 1.3 4 A 0
]
D) CH 4
24. (4 n + 2) electrons represents the following the rule. A) K ek ule ’ s
]
D) Me th ane
‘x’ is obtained from ‘y’ by the reaction.[
A) hydro ha log enation
A) C 2 H 6
]
C) C 2 H 6 , H 2
]
D) C 2 H 5 ONa, OH
CARBON AND IT’S COMPOUND – (LEVEL-II) Page |
1 97
NTSE SAT MATERIAL
CHEMISTRY
S R I G A Y A T R I
E D U C A T I O N A L
I N S T I T U T I O N S
1) A
2) C
3) C
4) B
5) B
6) A
7) C
8) B
9) A
10) D
11) D
12) A
13) B
14) A
15) D
16) B
17) B
18) D
19) B
20) C
21) A
22) A
23) C
24) B
Carbohydrates and Proteins-(LEVEL-1) 1. The enzyme which converts glucose into ethyl alcohol and carbon dioxide is A) Zy ma s e
B) I nve rt a se
C) Di astas e
[ D) Ma l ta se
2. When ethyl alcohol reacts with acetic acid ___________ is formed A) CH 3 COOC 2 H 5
B) CH 3 COOH
C) CH3 COCH 3
[
]
[
]
[
]
[
]
[
]
[
]
D) CH 3 CHO
3. The dark brown syrupy liquid obtained after removing the sugar crystals is A) Chlo ri nated l iqui d
B) B re we r’ s ye ast C) Al cohol
D) Mo la sse s
4. In the Tollen’s best glucose reduces A) A g met al t o Ag + ion
B) Cu in to Cu + 2 ion
C) Cu + 2 ion to cu metal
D) Ag+ ion to Ag metal
5. Which of the following is the sweetest sugar A) S uc rose
B) Fructos e
C) Ma l to se
D) Gl u cos e
6. The process of obtaining polypeptide from amino acids is known as A) A ddit io n polym erisati on
B ) Conden sa tio n pol yme ri s at ion
C) Hydrogenation
D) Fermentation
7. Ethyl alchol containing pyridine is called A) Rec tif ied spirit
B) Absol ute al cohol
C) De natured s pi ri t
8. Number of aminoacids are present in the human body. A) 62
B) 32
C) 26
B) Haemo globi n
C) Co l lag en
D) Bra ndy [
]
[
]
D) 23
9. Protein present in nail is A) K erat in
]
D) Insul in
10. A few drops of Iodine is added to an organic acid solution. The solution becomes blue in colour. Then the organic solution contains. [ ] A) S tarc h
B) Gl ucos e
C) Sucros e
D) Fruct os e
11. Which of the following is used to get absolute alcohol from rectified spirit A) H 2 SO 4
B) P 2 O 5
C) Cao
1 98
NTSE SAT MATERIAL
]
[
]
D) H 2 O
12. Steps involved in the purification of sugarcane juice respectively are
Page |
[
CHEMISTRY
S R I G A Y A T R I
E D U C A T I O N A L
A) Defecatio n, ca rbon atio n, su lp hi ta ti on
I N S T I T U T I O N S
B) Ca rbon at io n, defecatio n, su lp hita ti on
C) Suphitation, defecation, carbonation D) Defecation, Sulphitation, Carbonation 13. Aldehydes can be distinguished from ketones by using A) S c hiff ’s reagent
B) Cone H 2 S O 4
A) (C H 3 ) CH-CHOH CH(CH3)2
B) (CH 3 ) 2 CHO
C) (CH3 ) 3 CC H2 OH
D) (CH3 ) 2 COH CH3
15. Starch is B) Ol i gosa cch aride
B) Fructos e
C) Sucros e
B) Fructos e
C) Sucros e
B) Hyd rol ysi s
C) Ferme n tat ion
B) Ha em og lobin
C) Ker at in
B) Al cohol ind ustry
[
]
[
]
[
]
[
]
[
]
D) Cyt ok in in
20. CO 2 is the biproduct of A) S ug ar i ndu s t ry
]
D) De f eati on
19. Which of the following has 574 amino acids A) Ins uli n
[
D) No ne
18. Convertion of milk into curd A) Hyd ro genati on
]
D) No ne
17. A polyhydroxy ketone A) Gl uco se
[
C) di sa ccha ride D) Pol ys acc hari de
16. A polyhydroxy aldehyde A) Gluco se
]
C) Anhydroses ZnCl 2 D) Resorcinol
14. The tertiary alcohol is
A) Mo nos acc hari de
[
C) Hu ma n i ndu st ry D) Non e
KEY - UNIT-8 Carbohydrates and Proteins (LEVEL-I)
1)
A
2)
B
3)
D
4)
D
5)
B
6)
A
7)
C
8)
C
9)
A
10)
A
11)
C
12)
A
13)
A
14)
C
15)
D
16)
A
17)
A
18)
C
19)
B
20)
B CARBOHYDRATES AND PROTEINS (LEVEL-II)
1. The general formula of carbohydrates are A) C n H 2 n + 1 O
B) C n H 2 n O
C) C x (H 2 O) y
]
[
]
[
]
D) C n (H 2 O) 2 n
2. Carbohydrates are A) hydrates of carb on
[
B) pol yhyd ro xy a ldehydes or ket ones
C) polyhydroxy acids D) None 3. Which carbohydrates is found most abundantly in nature Page |
1 99
NTSE SAT MATERIAL
CHEMISTRY
S R I G A Y A T R I
A) Fruc tose
E D U C A T I O N A L
B) Gl ucos e
I N S T I T U T I O N S
C) Starch
D) Ce l l ul os e
4. Milk sugar is A) s ucros e
B) l act o se
C) f ru ctos e
B) ma l t ose
C) gl yc ogen
B) Fructos e
C) Sucros e
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
D) Starch, maltose, Lactose
8. Mularotation is shown by B) S ucros e
C) Gl u cos e
D) Fructos e
9. On hydrysis of starch we get finally A) Gluc ose
[
B) Ma l tose, L actos e, Gluco s e
C) Glycogen, Lactose, Sucrose
A) S tarc h
]
D) No ne
7. Which of the following are all disccharides A) Ma lt os e, Sucros e, Lac tose
[ D) cel lulose
6. Which of the following is leaevo rotatory A) Gluc ose
]
D) gl uc ose
5. Human digestive system does not hydrolyse A) s t arch
[
B) Fructos e
C) Gl u cos e & Fructos e
D) Sucros e
10. The term anomers of glucose refers to A) I romers of glu cos e that di ffer in co nf igu rati on ‘ C 1 ’ & ‘C 4 ’ B) A mixture of D-glucose & L – glucose C) Enantiomers of glucose D) Isomers of glucose that differ in configuration at C 1 11. Carbohydrates are synthesized in plants by A) ph ot od e grad ati on
B) photo cyc li za ti on
C) photosynthesis
D) photo addition
12. Carbohydrates are used by body mainly A) f or ob tai ni ng v ita mi ns
B) as a sourc e of en e rg y
C) for building muscles
D) for all its development needs
13. The coagulation of protein is called A) Dehydrati on
B) Denaturati on
C) De ami n ati on
D) De cay
14. Enzymes
[
]
A) A cc el erate bioch emi cal rea c tions B) Cosis ts of aminoacids C) Have optimum activity at body temperature
D) have the above propeties
15. The function of enzyme in the living system is to A) Tran sport ox yg e n
B) P rovi de i mm uni t y
C) Provide energy
D) Catalize bio-chemical reactions
16. The essential amino acids are those.
[
]
[
]
A) W hi ch are e sse nti al to c atal yse rea ction s. That l ead t o th e forma ti on of pe pti de s B) Which cannot be synthesized by animals from other materials in diet C) The deficiency of which in the diet prevents growth and may even cause death D) As mention in both A & B Page |
2 00
NTSE SAT MATERIAL
CHEMISTRY
S R I G A Y A T R I
E D U C A T I O N A L
I N S T I T U T I O N S
17. Which of the following amino acids contains a thiol group in the side chain. [ A) met hi on ine
B) cystei ne
C) v ali ne
D) seri ne
18. In sickle cell anaemia the basis of malfunction of hemoglobin molecule is A) f au l ty bi ndi ng of the he mo gru op s C) reduced affinity for oxygen
]
[
]
B) in co rr e ct sec on dary struc ture D) substitutuion of glutamic acid residue by
valine 19. A small non protein part which is associated with the protein part of enzyme and is required for their enzyme activity is called. A) an apo zyme
B) a hol oen zyme
[
C) a cofa ctor
D) a coe zym e
20. The protein present in hair, hoof and nail is A) A lbumi n
B) Insu li n
]
[
C) Co l lag en
]
D) Kerati n
CARBOHYDRATES AND PROTEINS (LEVEL-II) 1)
C
2)
B
3)
D
4)
B
5)
D
6)
B
7)
A
8)
C
9)
A
10)
D
11)
C
12)
B
13)
B
14)
A
15)
D
16)
D
17)
B
18)
D
19)
A
20)
D OIL AND FATS (LEVEL-1)
1. The formula of sodium stearate is B) CH 2 (C H 2 ) 3 OS O 0 NA
B) C17 H 35 COONa
C) H 2 (CH2) 3 OSO3 Na
D) CH 3 (C H 2 ) O S O 3 Na
2. Detergents are more efficient than soaps due to presence of A) Carbox yl i c aci d group
B ) Sulphoni c a cid g ro up
C) Alcoholic group
D) Ester group
3. Castor oil is used in the preparation of A) S oa ps
B) Paints
C) Pl ast ic s
[
]
[
]
[
]
D) Ink
4. A soap can be directly obtained from oils by hydrolysis in the presence of a base. The process is called A) Hyd rol ys i s
[ B) Hyd ro ge nerati on
C) Saponi fi ca ti o n D) Fe rm enta ti on
5. Shaving soap contains excess of A) Glyc erol
B) St eri cal id
[ C) Perf ume
B) Fe
C) Ni
7. The salt present in toilet soaps is Page |
2 01
NTSE SAT MATERIAL
]
D) De t ergent
6. The following catalyst is used in the hydrogenation A) Mn
]
[
]
[
]
D) Co .
CHEMISTRY
S R I G A Y A T R I
A) Na +
E D U C A T I O N A L
B) Mg + 2
I N S T I T U T I O N S
C) K +
D) Li +
8. Ca(OH) 2 is used in
[
A) To ilet soap B ) Laundry so ap
C) Grea ses
D) W ate r proof te xture
9. In the heating of oils to prepare soap Cao acts as A) Oxi d i sing ag ent
B) Reduc ing ag ent
]
C) Ca t al ys t
[
]
[
]
D) In hibi to r
10. The functional group present in fats is
A) A k etone g ro up B ) An Est er group C) A Pe ptide group D) An al cohol group 11. An important byproduct of soap manufacture is B) Sodium salt
B) Glycorol
C) Aids
B) Se cond ar y
C) Tertiar y
A) P hysi c al stat e
B ) Presenc e of peptide bond
C) Presence of triple bond
D) Presence of double bond
14. Hydrogenation reactions are A) Subs ti tuti on re acti ons
B) Addi ti on reacti on s
C) Fermentation reactions
D) Neutralization reactions
15. Quality of soap depends on B) Comp o si ti on
[
]
[
]
[
]
[
]
D) Co mple x
13. The basic deference between oil and fat is
A) NaOH
]
D) Fertilizer
12. Glycerol is a ___________ alcohol A) Prima ry
[
C) Fatt y a cids
D) Qu al i ty o f b ase
16. Which of t he following can be used as a catalyst while preparing soap during heating of oil. [ ] A) NaOH
B) KOH
C) Zn O
D) Mg CoAl 2
17. Which of the following is a sodium salt of FAS B ) C 8 H 1 0 S O 3 Na
B) CH 3 C 6 H 5 SO 3 N a
C) C 1 H 2 3 – SO 3 Na
B) Na +
C) Mg 2 +
B) 3, 4, 5 tribromo salicylanivide
B) Lauri c acid
]
[
]
C) Steric acid D) None
20. Which of the following is a saturated fatty acid A) Myri sto l ei c a ci d
[ D) Triethanol ammonium
19. Deodorant soap contains B) Triethanofammonium
]
D)O 2
18. The cation of soap useful for dry cleaning is A) K +
[
[
C) Pal mi tol ei c
]
D) Linote i c ac id
KEY - UNIT-9 OIL AND FATS( LEVEL-I) 1)
B
2)
B
3)
B
4)
C
5)
B
6)
C
7)
C
8)
D
9)
C
10)
B
11)
B
12)
B
Page |
2 02
NTSE SAT MATERIAL
CHEMISTRY
S R I G A Y A T R I
13)
A
14)
B
19)
B
20)
B
E D U C A T I O N A L
15)
C
16)
I N S T I T U T I O N S
C
17)
C
18)
D
OILS & FATS – LEVEL - II
1. The formula of sodium stearate is A ) C H 3 ( C H 2 ) 3 O S O 2 Na
B) C 17 H 3 5 CooNa
C ) H 2 ( CH 2 ) 3 O S O 3 Na
D) CH 3 ( C H 2 ) 1 1 O S 3 N a
2. Which of the following is a sodium salt of FAS A ) C H 3 C 6 H 5 S O 3 Na
B) C 8 H 1 0 S O 3 N a
C ) C 1 1 H 2 3 S O 3 Na
D) C 7 H 8 S O 3 N a
3. An example for an unsaturated fatty acid is A ) L a u r i c a c d
B ) My l i s t i c a c i d
C ) Ol e i c a c i d
C) C 1 7 H 2 9 CooH
B) Na +
C) Mg 2 +
[ B ) S a t u r a t ed f a t
C ) Un s a t u r a t e d oi l
B) Na + salt
C) Li + salt
B ) Mg ( O H ) 2
C) Al (OH) 3
C ) Ca n d l e wa x
B ) Cocon ut oil
C) B utt er
B ) S u l p h o n i c a c i d g ro up
C) Alcoholic group
D) Ester group
NTSE SAT MATERIAL
]
[
]
[
]
[
]
[
]
D ) S o ya b e a n
A ) C a r b o x yl i c a c i d g r o up
2 03
[
D) v arnish
11. Detergents are more efficient than soaps due to presence of
Page |
]
D) NH 4 O H
10. Sources of stearic acid A ) W h al e
]
D) Mg + 2 salt
9. The substance which does not contain a lipid B ) ground nut oil
]
D ) Un s a t u r a r e d f a t t y a c i d
8. Which of the following is not used in soaps and detergents
A ) wi n e
]
D) Triethanol
7. The salt used in greases is
A ) N a o H
[
[
6. Dalda is
A ) K + salt
]
D) C 1 1 H 2 5 CooH
5. The cation of soap useful for dry cleaning is
A ) F a t t y a c i d
[
[ B) C 17 H 3 3 CooH
A ) K + ammonium
]
D ) P a l mi t i c a c i d
4. Formula of lauric acid is A ) C 1 7 H 3 5 CooH
[
CHEMISTRY
S R I G A Y A T R I
E D U C A T I O N A L
I N S T I T U T I O N S
12. Caster oil is used in the preparation of A ) S o a p s
B) Paints
C) Pl ast ic
B ) P e p t i d e l i n k a g e C ) Gl y c o s i d i c l i n k a ge
B) Esters
C ) Ca rb o x y l i c a c i d
B ) C e t yl p a l mi t a t e
C) Lauryl raulate
D) Glyceryl triplamate
16. Chemically digestion is A ) H yd ro g e n a t i on
B ) H yd r o l y s i s
C ) A n a b ol i s m
B) Protein
C ) Gl u c o s e
B) Ceptali m
]
[
]
[
]
[
]
[
]
D) ATP
18. Which of the following is a phospholipid phospholipid A ) L e c i t h i n
[
D ) De t r y d r o g e n a t i o n
17. The energy store in the cell of living body in the form of A ) F a t
]
D) Hydroca rbons
15. Bee wax largely consists of A ) M yl i c yl p a l mi ta t e
[ D ) No n e
14. Fats and Oils belongs to the class of A ) A l c o ho l s
]
D) Ink
13. The group linkage present in fat is A ) E s t e r l i n k a g e
[
C ) 3 – p h o sp h o t i d yl s e ri n e
D ) A l l g th e r e
19. A fat is a
[
]
A ) P o l y h yd r i c a l c oh ol B ) Mo n o e s t e r o f l o n g c h ai n f a t t y a c i d a n d a l on g ch a i n al c oh ol C) Triester of a glyacid and a long chain fatty acid and is a solid at room temperature D) Triester of a glycerol and a long chain fatty acid and is a li quid at room temperature temperature 20. The substances which act as emulsifiers in lipid metabolism metabolism A ) b i l e j ui c e s
B) f atty a ci ds KE Y
-
[
C ) a mi n o a ci d s
]
D ) s u l p h on i c a c i d
OILS & FATS – LEVEL – II
1)
B
2)
C
3)
C
4)
D
5)
D
6)
C
7)
C
8)
D
9)
C
10)
C
11)
B
12)
B
13)
A
14)
B
15)
A
16)
C
17)
A
18)
D
19)
D
20)
B
Chemistry and industry – LEVEL-1 1.
The natural nutrients are A) C
Page |
2 04
B) H2
[ C) O2 NTSE SAT MATERIAL
D) All the above CHEMISTRY
]
S R I G A Y A T R I
2.
E D U C A T I O N A L
I N S T I T U T I O N S
The micro nutrients are A) Cu
3.
B) Mo
C) Mn
4.
B) CaCl2 Po4I2
C) NH4 H2 Po4
5.
B) K2 SO4
C) NH4Cl
6.
B) Mixed fertilizer
C) Micro fertilizer
7.
B) 3 to 6
C) 5 to 9
8.
B) Propane
C) Butane
9.
C) Green colour
B) NO
C) N=N C) Zinc state
B) Acetone
C) Alcohol
B) Solid in liquid
C) liquid in liquid
B) Glucose
C) Sucrose
B) Cum- Arabica
C) Nylon
B) Ceiling tiles
C) Films
B) Ethane
C) Cyanide
B) Pyrex glass
C) Had glass
B) CaCO3
C) SIO2
B) 30%
C) 50%
B) Pyres glass
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
D) 60%
20. Glass- blowing blowing is possible with A) Flint glass
]
D) All the above
19. Raw slurry contains ______________% ______________% water A) 40%
[
D) Borosilicate glass
18. RAW materials used for glass A) Na2CO3
]
D) None
17. Which type of glass is used in optics A) Flint glass
[
D) Elastic hosiery
16. Monomer in PVC A) Vinyl chloride
]
D) Orlon
15. Uses of nylon 6,6 A) Insulation
[
D) Starch
14. Which of the following is natural adhesive A) Urea
]
D) solid in gas
13. Which is main constituent in the natural fibers A) Cellulose
[
D) Ether
12. Emulsion is A) Liquid in solid
]
D) colloidal clay
11. Nail polish remover is A) Acetaldehyde
[
D) None
10. Talc is A) Magnesium silicate B) Calcium state
]
D) More
Examples for Nitro dyes A) NO2
[
D) All the above
Colour of petroleum A) Dark greenish brown B) Colourless
]
D) 10 to 12
LPG gas contains A) Propene
[
D) None
Number of carbon atoms in petrol A) 4 to 8
]
D) A &C
Nitrophosk is example for A) Single fertilizer
[ D) )NH4 I 2 Po 4
Example for single fertilizer A) KCl
]
D) All the above
Example for nitrogen fertilizer A) NH4NO3
[
C) Soda glass
D) hard glass
KEY - 10. Chemistry and industry LEVEL-1 1)
Page |
D
2 05
2)
D
3)
A
4)
D
NTSE SAT MATERIAL
5)
B
6)
E
CHEMISTRY
S R I G A Y A T R I
E D U C A T I O N A L
I N S T I T U T I O N S
7)
D
8)
B
9)
A
10)
A
11)
B
12)
C
13)
A
14)
A
15)
A
16)
A
17)
D
18)
D
19)
A
20)
B CHEMISTRY AND INDUSTRY- LEVEL-II
1. IUPAC name of paracetamol A) 4 – hyd ra oxyaceta ni li de
A) A c etyl s ali cyl i c a ci d
B)
C)
A) c hlorox yl enol
B) t erpi ne ol
B) Anti mi crobia ls C) Di si nf ec tants
A) A nta ci ds
B) D
C) E
[
]
[
]
[
]
[
]
[
]
[
]
[
]
D) Al l th e ab ov e
8. Water soluble vitamins are B) C
C) A & B
D) D
9. Transmatic acid is A) I nd uces ce l l di vi sion
B) Op en ch ai n di c arbo x yd i c aci d
C) It has one double bond
D) All the above
10. Colour of p-hydroxy azobenzene dye is B) orange
C) red
D) blue
Name of the dye is
A) p-h yd rox y Azo benzene
B) p-aminoa zoben ze
C) p-amido azo benzene
D) none
12. In the face powder preparation TiO 2 used for B) Sli p
C) Adherenc e
13. Cold – cream contains
D) Absorbe ncy [
B) Bees wa x
C) Ro se wa ter
14. Which of the following is milk protein 2 06
]
D) Artificial sweetening agent
7. Fat soluble vitamins are
Page |
[
B) Antihis tami ne s
C) Food preservatives
A) A lmond oi l
]
D) Both A&B
6. Omeprazole and ansoprazole are example for
A) Opac it y
[ C) mi x ture of A&B D ) No ne
5. Penicillin is
11.
]
D)
4. Dettol is
A) yel low
[
D) All the above
3. Structure of phenacetin
A) B
]
B) Sali c yl ic aci d a cetal e
C) O – acetyl salicylic acid
A) A
[
D) Asprin
2. IUPAC name of Aspirn is
A) A nti bioti c
]
B ) P – A mi n o ph en ol
C) Salicylic acid
A)
[
NTSE SAT MATERIAL
]
D) Al l the ab ov e [
]
CHEMISTRY
S R I G A Y A T R I
A) c asei n
E D U C A T I O N A L
I N S T I T U T I O N S
B) bl oo d al bu mi n C) starch
D) resins
15. Gramophone records contains A) P VC
B) Pol ye thyl e ne
C) Pol ye s ters
B ) Adipi c acid
C) Both a & B
D) Sodium disulphide
17. Empirical formula of rubber is A) C 5 H 8
B) C 5 H 1 0
C) C 4 H 8
A) Calc ium sil icate
B ) Cal ciu m alu mi na te
C) Both A&B
D) Gypsum
19. Lowest boiling point compound is B) petrol
C) Na ptha
B) Cu
C) Mn
B) K 2 CO 3
C) K 2 SO 4 . Al 2 (SO 4 ) 3
B) Spark
C) Cr uc ible
B) K 2 CO 3
[
]
[
]
[
]
[
]
[
]
[
]
[
]
[
]
D) none
23. Hard glass contains A) Na 2 CO 3
]
D) none
22. A glaze is a A) Fi n e powd e r
[
D) A ll the ab ov e
21. Formula of potash feldspar A) K A l SIO 8
]
D) K erosen e
20. Micro fertilizer contains. A) B
[
D) C 6 H 1 2
18. ‘Clinker cement’ contains
A) P etroleum e the r
]
D) Nyl on 6, 6
16. Nylon 6, 6 is formed from A) Hex a me th yl en e di amine
[
C) KOH
D) H 3 B O 3
24. U 2 O 3 gives _____ colour to glass. A) Fluroe scent green ish yel low B) Red
C) Purpule D) Blue
25. Flint glass is also called A) Le ad gla ss
B) Potash – lime C H E M I S T R Y
C) Soda – l i me A N D
D) Borosi li cate
I N D U S T R Y
1 )
A
2 )
D
3 )
A
4 )
C
5 )
A
6 )
A
7 )
D
8 )
C
9 )
D
1 0 )
A
1 1 )
D
1 2 )
A
1 3 )
D
1 4 )
A
1 5 )
A
1 6 )
C
1 7 )
A
1 8 )
C
1 9 )
A
2 0 )
D
2 1 )
A
2 2 )
A
2 3 )
A
2 4 )
A
2 5 )
B
Page |
2 07
NTSE SAT MATERIAL
CHEMISTRY
PHYSICS
CLASSC - X
KEY
1) a
2) a
3) d
9.5 HEATING EFFECTS OF ELECTRIC CURRENT: JOULE’S LAW 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
1 kWh=............. joules a) b) 3.6 ×10 4 c) 3.6 ×105 d) 3.6 × 103 Fuse wire is an alloy of a) tin, steel b) iron, lead c) tin and lead d) none 1 calorie= a) 2.4 J b) 4.8J c) 4.2 J d) 4.0 J Unit of work in SI system is a) erg b) newton c) m/s d) Joule Walt is the unit of a) current b) potential difference c) power d) none The ratio of electrical work done in a conductor to mechanical equivalent of heat is a) power b) energy c) heat produced d) none Watt hour is a unit of a) Heat energy b) Electrical energy c) Electrical power d) None Wattage relates to 4 a) power b) work done energy d) potential 36c) × 10 1 kilo watt=....... watts a) 10 b) 100 c) 10,000 d) 1000 Chemical energy is converted into electrical energy a) Battery b) Immersion heater c) Electric stove d) Electric-iron KEY
1) c 9) d
SRIGAYATRI
2) c 10) c
3) c
4) d
5) c
NTSE Material
6) c
7) b
8) a
53
PHYSICS
CLASSC - X
UNIT - IX(b) Electricity
9
9.6 FARADAY’S LAWS OF ELECTROLYSIS 1. 2. 3.
Substances which dissociate when electricity passes through them are known as a) electric conductors b) electric insulators c) electrolytes d) semiconductors Unit of Z (ece) is a) gm/ ampere b) gm/sec c) gm/coulomb d) none In electrotyping the mould is made of a) lead b) gold c) silver d) wax KEY
1) c
2) c
3) d
9.7 MAGNETIC EFFECTS OF ELECTRIC CURRENT 1.
The production of e.m.f in one coil due to changes in current in another coil close by is called a) self induction b) mutual induction c) electromagnetic induction d) none
2.
B =
3. 4. 5.
μ 0i
is 2π r a) Coulomb’s law b) Maxwell’s law c) Ampere’s law d) none A wire carrying current has.....energy around it www.crsttp.blogspot.com a) sound b) light c) magnetic d) mechanical A current carrying conductor behaves like a) Magnet b) Galvanometer c) Ammeter d) Voltmeter The direction of magnetic force due to a straight conductor carrying current can be expressed by a) Maxwell’s rule b) Ampere’s right hand rule c) Ampere’s swimming rule d) Fleming’s left hand rule KEY
1) b
SRIGAYATRI
2) c
3) c
4) a
5) b
NTSE Material
54
PHYSICS
CLASSC - X
9.8 PRINCIPLE OF WORKING OF AN ELECTRIC MOTOR 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
A device to convert electrical energy into mechanical energy a) Transformer b) Dynamo c) Electric motor d) Junction -diode Armature of an electric motor a) Rectangular coil b) Permanent magnet c) Soft iron cylinder d) None An instrument to reverse the direction of current a) Rheostat b) Resistrance box c) Commutator d) Tap-key Which component of electric motor utilises mechanical energy? a) Armature b) Permanent magnet c) Shaft d) Coil Two metallic half-rings in an electric motor act as a) Magnetic poles b) shaft c) permanent magnet d) commutator Shaft of an electric motor is rotated by a) induced field b) permanent field c) coil d) commutator Current enters into an electric motor through a) coil b) brush and half ring c) shaft d) armature Current leaves the coil of an electric motor through a) Shaft b) Armature c) Commutator ring; brush d) None Top-surface of the coil of an electric motor acts as a) a magnet b) north pole c) south pole d) neither south nor north Bottom surface of the coil of an electric motor acts as a) a magnet b) N-pole c) S-pole d) neither N-pole norSpole KEY
1) c 9) c
2) a 10) b
3) c
4) c
5) d
6) a
7) b
8) c
9.9 ELECTRO MAGNETIC INDUCTION 1.
2. 3. 4. 5. 6.
A transformer works ont he principle of a) Fleming’s left hand rule b) Lenz’s law c) Mutual induction d) Self induction H.T. stands for a) higher transformer b) high tension c) high tower d) none Principle of a dynamo is a) mutual induction b) self induction c) electromagnetic induction d) none Scientist who discovered laws of electromagnetic induction a) Maxwell b) Planck c) Faraday d) Newton Conversion of mechanical energy into electrical energy a) dynamo b) amplifier c) dry cells d) rectifier Production of electricity by a changing magnetic field associeated with an electric circuit a) Magnetic induction b) Electrostatic induction c) Electromagnetic induction d) none
SRIGAYATRI
NTSE Material
55
PHYSICS
7.
8.
9. 10.
The direction of induced current due to electromagnetic induction a) In the direction of change b) opposing the change c) At right angle to change d) None A.C. generator works on the phenomenon of a) Electromagnetic induction b) Electromagnetic radiation c) Electrstatic induction d) None Unidirectional current is a) A.C b) D.C c) Both d) None Transformer formula a)
11.
CLASSC - X
V1 V2
=
i1 i2
=
n1 n2
b)
c)
d)
A transformer used the following to minimise power losses a) slip rings b) iron core c) shaft
d) brushes
KEY
1) c 9) b
2) b 10) c
3) c 11) b
4) c
5) a
V1 V2
SRIGAYATRI
=
6) c
i12 i21
NTSE Material
=
7) b
8) a
n12 n12
56
PHYSICS
CLASSC - X
UNIT - X Modern Physics
10
10.1 ATOMIC STRUCTURE 1.
The radius of nucleus of an atom is
2.
a) b) The radius of the nucleus is of the order of a) b) 10 −8 m
c)
d)
b) 1.66 ×10−12 m
d) 3 ×108 m
KEY
1) b
2) a
10.2 ATOMIC NUMBER, ATOMIC MASS AND MASS DEFECT 1. 2. 3. 4. 5.
a) positron b) β − particle d) neutrino The mass of hydrogen atom is a) 1.073 b) 2.0073 c) 1.73 d) 1.0073 The mass of an atom is measured in a) b) Hertz c) a.m.u d) neutrons If Z is the number of protons and N is the number of neutrons the mass number A is equal to a) Z+N b) Z-N c) N-Z d) 2Z+N The expression that denotes mass energy equivalence is b) E =
a)
6.
10 2 −13 −15 05 59 mc = 10 E =×Δ Δ m 2.4 10 A 27c) neutron
Example for neutral massless particle
The number of neutrons is a) 27
Δm
c) E =
c2
c
2
Δm
d)
Co is
b) 59
c) 32
d) 86
KEY
1) d
SRIGAYATRI
2) d
3) c
4) a
5) a
NTSE Material
6) d
57
PHYSICS
CLASSC - X
10.3 RADIOACTIVITY 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16.
The ionisation power is highest in case of a) -particles b) -particles c) -rays The electromagnetic radiation observed in radiactivity is a) -particles b) -particles c) -particles
d) X-rays
When a -particle is emitted by an atom, its mass number a) decreases b) increases c) remains same d) may decrease or increase Isobars are the elements of a) same mass number b) same atomic number c) same neutron numberd) sme number of electron Thorium series is a a) 4n series b) 4n+1 series c) 4n+2 series d) 4n+3 series Bismuth series is a a) 4n series b) 4n+1 series c) 4n+2 series d) 4n+3 series The electromagnetic radiation observed in radioactivtiy is a) b) c) d) X-rays The person who discovered the radio activity a) Lenard b) Chadwick c) Becquerel d) Bohr Natural radioactivity is shown by the elements whose atomic number is greater than a) 82 b) 81 c) 83 d) 84 The rays that bent maximum in magnetic field are γ a) -rays b) - rays c) -rays d) none α 12 14 235 238 β λ The rays that are undeflected in both electric and92 6 magnetic fields are a) - rays b) -rays Actinium series is ......... series a) 4n b) 4n+1 T= a) 0.963 b) 0.936
c)
-rays
d) none
c) 4n+3
d) none
c) 0.693
d) none
The mass of the -particle is same as the mass of ...... a) electron b) proton c) neutron Two different elements having same number of neutrons are called a) isotones b) isotrons c) isotopes .......isotope is used in thedetermination of age of fossils a)
17.
d) X-rays
U
b)
U
c)
C
d) none d) isobars
d)
C
The sequential decay of a given nucleus is called a) radio active series b) radio active disintegration c) thermonic emission d) half wave rectification
SRIGAYATRI
NTSE Material
58
PHYSICS
18.
CLASSC - X
The daughter nucleus formed when
a) 19. 20.
U
U
c)
decay
Ra
d)
U
The time required to change 1 gm of radio active substance to 1/8 gm a) T b) 2T c) 3T
d) 4T
-rays consist of a) Protons
d) Helium nuclei
21. 22.
b)
Th undergoes
b) Neutrons
c) Electrons
belongs to a) Thorium series b) Uranium series c) Actinium series The speed of α -particles in air is of the order of
d) Radium series
a)
d) 10 7 m/s
m/s
b)
m/s
c)
m/s
KEY
1) a 9) c 17) a
2) c 10) b 18) d
3) c 11) c 19) c
4) a 12) c 20) c
5) a 13) c 21) c
6) b 14) a 22) d
7) c 15) a
8) c 16) d
10.4 ARTIFICIAL TRANSMUTATION 32 238 235 214 β 10 3234 108 ×Ra 88 223
1. 2. 3. 4. 5. 6.
7.
In Uranium series the parent nucleus is 82 90 92 a) Uranium b) Thorium c) plutonium d) Actinium Moderator in a nuclear reactor reduces the .......of the neutron a) velocity b) energy c) mass d) none ......reaction takes place in stars a) Radioactive b) Thermo-nuclear c) Bio-chemical d) None ...... is the method to find the age of fossils a) Dimensional method b) Carbon dating c) Curie method d) None The shield of nuclear reactor is a) copper b) silver c) gold d) lead Moderator in a nuclear reactor a) Slows down neutrons b) Produces slow neutrons c) Slows down the rate of reaction d) Does all these In a nuclear reactor,...... is used for controlling the rate of fission a) Cadmium b) Graphite c) Heavy water d) All fo these KEY
1) a
SRIGAYATRI
2) a
3) b
4) b
5) d
NTSE Material
6) a
7) a
59
PHYSICS
CLASSC - X
UNIT - XI Electronics
11
11.1 BAND THEORY OF SOLIDS 1. 2. 3. 4. 5.
The energy gap is highest in the case of a) metal b) insulator c) semiconductor When temperature of a semiconductor is raised, its energy gap a) increases b) decreases c) remains same When temperature of a metal increases the resistance a) increases b) decreases c) remains same The energy gap of a conductor is a) 2 eV b) 3 eV c) 4 eV A semiconductor is an insulator at......... a)
6. 7. 8. 9. 10.
b) 0 K
c)
b)
d) may increase of decrease d) none d) zero d) 300 K
The best conductor 17 25 280 silver 7 0 a) copper b)Aluminium c) 10 0 2710 CC The best insulator a) wood b) paper c) glass Silicon is a a) conductor b) insulator c) semiconductor Number of electrons per cubic meter in conductors is a) b) c) Number of electrons per cubic meter in insulators is a)
d) diode
c)
d) iron d) rubber d) none d) d)
KEY
1) b 9) a
2) b 10) c
3) a
4) d
5) b
6) c
7) c
8) c
11.2 INTRINSIC AND EXTRINSIC SEMICONDUCTOR 1. 2.
The charge carriers in semiconductors are a) electrons b) holes The concentration of free electrons is more in a) copper b) silicon
SRIGAYATRI
c) electrons and holes d) ions c) wood
NTSE Material
d) germanium
60
PHYSICS
3.
4. 5. 6.
7. 8. 9. 10.
CLASSC - X
In a p-type semiconductor majority carriers are a) holes b) electrons c) both electrons and holes d) negative ions To make silicon a p-type semi-conductor, the impurity to be doped is a) Arsenic b)Aluminium c) Phosphorus d) Antimony P-type semiconductor is formed by the addition of these impurities a) Divalent b) Trivalent c) Tetravalent d) Pentavalent The number of holes and number of electrons are equal in a) p-type semiconductor b) n-type semiconductor c) p-n junction d) intrinsic semiconductor The majority cariers in p-type semiconductor are a) holes b) electrons c) protons d) none The majority carriers in n-type semiconductor a) holes b) electrons c) protons d) none Introducting impurities in very small quantities into a material is called a) Hoping b) Coping c) Closing d) Doping Trivalent impurities are called a) donors b) acceptors c) both d) none KEY
1) c 9) d
2) a 10) b
3) a
4) b
5) b
6) d
7) a
8) b
11.3 JUNCTION DIODE-PROPERTIES AND USES 1. 2. 3.
Diode does not conduct in......condition a) forward bias b) Reverse bias c) Both A p-n diode has.....junctions a) 1 b) 2 c) 3 Diodes which glow on supply of electricity are a) CDs b) VCDs c) DVDs
d) None d) 4 d) LEDs
KEY
1) b
2) a
3) d
11.4 TRANSISTORS-PROPERTIES AND USES 1. 2. 3.
The transistor was invented in a) 1946 b) 1947 A transistor consists of these junctions a) 2 p-n b) 3 p-n A transistor has.....junctions a) 1 b) 2
SRIGAYATRI
c) 1948
d) 1949
c) 4 p -n
d) none
c) 3
d) 4
NTSE Material
61
