Railway/SSC General Science MCQ compendium – By Dr. Harravisher Singh Kahlon 1. Which of the following is not a bone in the human body? (a) Sternum (b) Humerus (c) Pericardium (d) Tibia Ans. c Q.2. Rennin and lactase, the enzymes required to digest milk, disappear in the human body by the age of (a) two (b) three (c) five (d) eight Ans. a Q3. Duodenum is situated (a) at the uppermost part of the small intestine (b) near the lungs (c) in the brain (d) at the tail end of the intestine Ans. a Q.4. The heart is covered by a membrane called (a) Epidermis (b) Dermis (c) Epicardium (d) Pericardium Q.5. About …..of the total calcium present in the human body is in the blood. (a) 99% (b) 70% (c) 5% (d) 1% Q.6. Phenylketonuria is an example of an inborn error of metabolism. This ‘error’ refers to (a) hormonal overproduction (b) non disjunction
(c) atrophy of endocrine glands (d) inherited lack of an enzyme Ans. c Q.7. As in the arms and legs, blood flows against gravity and is prevented from flowing back by (a) the extremely low pressure of venous blood (b) valves (c) movements in the surrounding muscles (d) the narrowing down of the lumen of veins by the contraction of the muscle layer comprising their walls Q.8. Identical twins arise when two (a) cells develop independently from the same zygote (b) cells develop simuntaneously from different zygotes (c) blastula develops from the same zygote (d) ova develop independently of the gametes Q.9. Element that is not found in blood is (a) iron (b) copper (c) chromium (d) magnesium Ans. c Q.10 Blood is a– (A) gelatinous tissue (B) connective tissue (C) epithelial tissue (D) muscular tissue Q.11. The gland, which in relation to body size is largest at birth and then gradually shrinks after puberty, is? (a) Thyroid (b) Pituitary (c) Thymus
Railway/SSC General Science MCQ compendium – By Dr. Harravisher Singh Kahlon (d) Adrenal Ans. c Q.12. Pick out the correct match– (A) Egg yolk – Protein and Fat (B) Fleshy food – Calcium and Protein (C) Fish – Starch and Vitamin (D) Milk – Fibre and Mineral Q.13. Which of the following is not a bone in the legs of human body? (a) Radius (b) Tibia (c) Femur (d) Fibula Ans. a Q.14. Blood group was discovered by– (A) Alexander Fleming (B) William Harvey (C) C. Landsteiner (D) Ivan Pavlov Q.15. Which of the following is not a vestigial organ? (a) Centriole (b) Molar tooth (c) Appendix (d) Diaphragm Ans. d Q.16. Which of the following bone articulations forms the gliding joint? (a) Humenis and radius (b) Carpals (c) Hip girdle and femur (d) Skull & neck verterbrae Ans. b Q.17. Pancreas secretes hormones which help in (a) blood clotting (b) production of antibodies (c) growth of body (d) keeping sugar balance in body Ans. d
Q.18. S-A node of mammalian heart is known as (a) Autoregulator (b) Pace-maker (c) Time controller (d) Beat regulator Ans. b Q.19. Consider the following statements regarding blood pressure: 1. It is the pressure exerted by the blood on the walls of any vessel. 2. It decreases in the arteries as the distance from the heart increases, 3. It is lower in the capillaries than in the arteries. 4. It is usually lower in women than in men. Of these, the correct ones are (a) 1 and 4 (b) l, 2and 3 (c) 2,3 and 4 (d) l,2,3 and 4 Ans. d Q.20. The hormone responsible for the secretion of milk in mothers, is? (a) ACTH (b) Leutinizing hormone (c) Adrenalin (d) Lactogenic hormone Q.21. What is the correct sequence of the following in heart attack? 1. Narrowing of the inner orifice of the vessel 2. ‘Plaque’ from fibrous tissue and high cholesterol 3. Inadequate supply of blood and oxygen 4. Clots of blood carried into the coronary arteries (a) 1,2,3,4 (b) 2,4, 1,3
Railway/SSC General Science MCQ compendium – By Dr. Harravisher Singh Kahlon (c) 2, 3, 1, 4 (d) 4, 2, 1 3 Q.22. Bile juice is secreted by (a) Pancreas (b) Liver (c) Spleen (d) Gall bladder Q.23. Veins differ from arteries in having (a) thinner walls (b) strong walls (c) narrower lumen (d) valves to control direction of flow Q.24. What is the main function of insulin in the human body? (a) To maintain blood pressure (b) To help in digestion of food (c) To control the level of sugar in the body (d) To check the level of iodine in the body Q.25. An enzyme that works in an acidic medium is (a) pepsin (b) tiypsin (c) ptyalin (d) maltose Q.26. The blood pressure is the pressure of blood in (a) arteries (b) veins (c) auricles (d) ventricles Q.27. Logically, what does a continually rising air pressure indicate? (A) Advent of unsettled and cloudy weather (B) Advent of a cyclone (C) Fine and settled weather (D) Fine and unsettled weather
Q.28. Which of the following glands controls the development of sex organs in humans? (a) Paancreas (b) Thyroid (c) Adrenal (d) Pituitary Q.29. Which of the following is an endemic species? (A) Nicobar pige (B) Horn bill (C) Indian Rhino (D) Pink-head duck Q.30Two identical piano wires have same fundamental frequency when kept under the same tension. What will happen if tension of one of the wires is slightly increased and both thewires are made to vibrate simultaneously ? (A) Noise (B) Non-linear effects (C) Resonance (D) Beats Q.31. Enriched uranium used in a nuclear reactor is– (A) uranium free of all impurities (B) uranium treated with radiation (C) uranium obtained through enrichment of polonium (D) uranium with a high percentage of a particular isotope Q.32 .If a person can see an object clearly when it is placed at distance of about 25 cm away from him, he is suffering from (a) myopia (b) hypermetropia (c) astigmatism (d) tunnel vision Q.33. Transboundary pollution (or) Acid rain is caused by– (A) Nitrogen oxide and sulphur dioxide (B) Carbon monoxide (C) Carbon dioxide and carbon tetrachloride.
Railway/SSC General Science MCQ compendium – By Dr. Harravisher Singh Kahlon (D) Hydrochlroflurocarbons. Q.34. In the case of a ‘Test-tube baby’? (a) fertilization takes place inside the test tube. (b) development of the baby takes place inside the test tube. (c) fertilization takes place outside the mother body. (d) unfertilized egg develops inside the test tube. Q.35 DPT vaccine is administered to prevent diseases like– (A) Diphtheria, Pertussis and Typhoid (B) Diphtheria, Pertussis and Tetanus (C) Dengue, Pertussis and Typhoid (D) Dengue, Polio and Tetanus Q.36. Lack of atmosphere around the Moon is due to– (A) low escape velocity of air molecule and low gravitational attraction. (B) high escape velocity of air molecule and low gravitational attraction. (C) low gravitational attraction only. (D) high escape velocity of air molecule only. Q.37. Cooking vessels have wooden or bakelite handles because– (A) wood and bakelite are bad conductors of heat (B) ) wood and bakelite act as a Black body. (C) ) wood and bakelite are good reflector (D) ) wood and bakelite have high refractive index Q.38. In a refrigerator; cooling is produced by– (A) the ice which deposits in the freezer (B) the sudden expansion of a compressed gas (C) the evaporation of a volatile liquid
(D) None of these Q.39. Man cannot digest cellulose whereas cows can do so because? (a) their gut contains bacteria capable of digesting cellulose. (b) they have a many – chambered stomach. (c) they have efficient grinding molars. (d) they produce an enzyme cellulose which can digest cellulose. Ans. a Q.40. Which of the following when taken by pregnant women, is found to be the cause of deformed children? (a) Glycerol (b) Xylidine (c) Thalidomide (d) Folic acid Q.41 The disease that has been eradicated from the world is– (A) Smallpox (B) Leprosy (C) Poliomyelitis (D) Chickenpox Q.42. The largest cell in the human body is (a) Nerve cell (b) Muscle cell (c) Liver cell (d) Kidney cell Ans. a Q.43. Lichens are formed due to the symbiotic association of (a) moss and fungi (b) bacteria and rhizobium (c) algae and fungi (d) bacteria and moss Q.44 The most dangerous consequence of excessive deforestation is– (A) destruction of wild animal habitats (B) soil erosion
Railway/SSC General Science MCQ compendium – By Dr. Harravisher Singh Kahlon (C) loss of forest wealth (D) loss of many valuable plants Q.45. Which of the following statements is true for planktons? (a) They live on the surface of lake water. (b) They live on the bottom of lakes. (c) They live on the plants growing in water. (d) They live in the water column. Q.46 The most stable eco-system is– (A) Grassland (B) Ocean (C) Forest (D) Mountain Q.47. Delivery of developed foetus is scientifically called as– (A) Abortion (B) Ovulation (C) Parturition (D) Oviposition Q.48. Poison glands of snakes are homologous to (a) stings of rays (b) salivary glands of vertebrates (c) electric organs of fishes (d) sebaccous glands of mammals Q.49. The phylum chordata is characterized by the presence of (a) spinal cord (b) notochord (c) nerve chord (d) None of these Q.50. Which of the following activities is suppressed by the presence of auxins in plants? (a) Growth of lateral buds (b) Cell division (c) Root initiation (d) Development of fleshy fruits
Q.51. What is the recent source of pollution of underground water? (A) Thermal Power Stations (B) Biogas Plants (C) Sewage (D) Landfills Q.52. An ideal example of sustainable resource is– (A) Afforestation (B) Farming (C) Reforestation (D) Agroforestation Q.53. ‘Farad’ is the unit of– (A) Conductance (B) Capacitance (C) Inductance (D) Resistance Q.54. Steel is more elastic than rubber because it– (A) is harder than rubber (B) requires larger deforming force (C) has greater coefficient of expansion. (D) has greater plasticity. Q.55. Communication satellites are used to– (A) transmit communication signal only (B) receive communication signal only (C) receive and redirect communication signal (D) provide information of natural resources only Q.56. In dicots the pollen-grains possess– (A) one germ pore (B) two germ pores (C) three germ pores (D) four germ pores Q.57. The digestive juice which has no enzyme is– (A) Intestinal juice (B) Gastric Juice (C) Bile (D) Saliva
Railway/SSC General Science MCQ compendium – By Dr. Harravisher Singh Kahlon Q.58. An essential feature of seed germination is the presence of– (A) Light (B) Temperature (C) Minerals (D) Water Q.59. Ethanol containing 5% water is known as– (A) Absolute alcohol (B) Dilute alcohol (C) Power alcohol (D) Rectified spirit Q.60. The minor planets revolving between the orbits of Jupiter and Mars are called– (A) Asteroids (B) Comets (C) Meteors (D) Novas Q.61. The best colours for a Sun umbrella will be– (A) black on top and red on inside. (B) black on top and white on inside. (C) red on top and black on inside. (D) white on top and black on inside. Q.62. The Lotus plants have no root hairs because– (A) the conducting tissue is not welldeveloped in roots. (B) it can store water in the stem. (C) the roots are adventitious. (D) it need not absorb water by roots. Q.63. Light energy is converted to chemical energy during the process of– (A) photosynthesis (B) fat metabolism. (C) transpiration. (D) respiration. Q.64. The organism living at the bottom of water mass is called– (A) Benthos (B) Plankton (C) Nekton (D) Neuston Q.65. ‘Genes’ are made up of–
(A) Only RNA (B) Only DNA (C) DNA, RNA and Protein (D) DNA and RNA Q.66. The hormone used as an oral contraceptive is– (A) Aldesterone (B) Cortisone (C) Progesterone (D) Testosterone Q.67. Expand the term IPCC– (A) International Pollution Control Council (B) International Panel of Climate Control (C) Interim Panel of Climate Change (D) Intergovernmental Panel on Climate Change Q.68. What is the main advantage of transplantation method of sowing rice? (A) It helps in early harvesting (B) The draining of water from the field before harvesting is made easy (C) It is helpful in achieving an economical use of water and a higher yield of grain (D) This method ensures maximum utilisation of land Q.69. Before X-ray examination (coloured X-ray) of the stomach, patients are given suitable salt of barium because– (A) barium salts are white in colour and this helps stomach to appear clearly. (B) barium is a good absorber of X-rays and helps stomach to appear dearly. (C) barium salts are easily available. (D) barium allows X-rays to pass through the stomach.
Railway/SSC General Science MCQ compendium – By Dr. Harravisher Singh Kahlon Q.70. The elements of a group in the periodic table– (A) have similar chemical properties. (B) have consecutive atomic numbers. (C) have consecutive atomic mass numbers. (D) have different physical properties Q.71. Which one of the following polymers is used for making bulletproof material ? (A) Polyvinyl chloride (B) Polystyrene (C) Polyethylene (D) Polyamide Q.72. The pH of fresh groundwater slightly decreases upon exposure to air because– (A) carbon dioxide from air is dissolved in the water. (B) oxygen from air is dissolved in the water. (C) the dissolved carbon dioxide of the groundwater escapes into air. (D) the dissolved oxygen of the groundwater escapes into air. Q.73. What happens when bleaching powder is left exposed to air ? (A) It gradually loses its oxygen (B) It gradually loses its chlorine (C) It turns dark brown in colour (D) It turns yellow in colour Q.74. Find the odd one– (A) Limestone (B) Slaked iron (C) Marble (D) Chalk Q.75. Each chromosome in the nucleus of a cell consists of– (A) two chromatids only. (B) two centromeres only. (C) two centromeres attached to a chromatid.
(D) two chromatids attached to a centromere. Q.76. White blood cells are produced in the– (A) Tongue (B) Thyroid gland and suprarenal gland (C) Bone marrow and lymph glands (D) Ductless glands Q.77. Which one of the following vitamins is necessary for blood clotting? (A) Vitamin A (B) Vitamin D (C) Vitamin K (D) Vitamin C Q.78. Which one of the following materials is used as controller in a nuclear reactor power generator– (A) Graphite (B) Heavy water (C) Cadmium (D) Beryllium Q.79. Banking of curves on road or railway track is done to provide– (A) gravitational force (B) angular momentum (C) centripetal force (D) centrifugal force Q.80. The filament of the electric bulb is generally made of tungsten because– (A) its cross sectional area is less. (B) its temperature coefficient of resistance is high. (C) its resistivity is low. (D) its melting point is high. Q.81. The material used for safety from nuclear radiation is– (A) Gold (B) Lead (C) Copper (D) Platinum Q.82. Calcium Sulphate hemihydrate is the chemical name of which of the following compounds? (A) Gypsum (B) Plaster of Paris
Railway/SSC General Science MCQ compendium – By Dr. Harravisher Singh Kahlon (C) Cement
(D) Sodium carbonate
Q. 83. An organism which can monitor air pollution is. (A) Fungi (B) Bacteria (C) Lichen (D) Algae Q. 84. Phototropic movement is controlled by ? (A) Ethylene (B) Auxin (C) Gibberellin (D) Cytokinin Q. 85. Match correctly the insect vectors in List I with the diseases transmitted by them given in List II: List I List II a. Anopheles (female) 1. Kala-azar b. Culex 2. SleepingSickness c. Sand fly 3. Filariasis d. Tse-tse fly 4. Malaria (A) a-4, b-3, c-1, d-2 (B) a-1, b-4, c-2, d-3 (C) a-2, b-1, c-4, d-3 (D) a-3, b-2, c-1, d-4 Q. 86. The mass of a body measured by a physical balance in a lift at rest is found to be m. If the lift is going up with an acceleration a, its mass will be measured by. (A) zero (C) m
(1+ ag )
(B) m
a g
( ) 1−
(D) m
Q87. A white and smooth surface is. (A) bad absorber and bad reflector of heat. (B) good absorber and good reflector of heat. (C) bad absorber and good reflector of heat.
(D) good absorber and good reflector of heat. Q. 88. When a body is immersed in a liquid, the force acting on it is. (A) Upthrust (B) Weight (C) Mass (D) Both (A) and (B) Q. 89. Boric Acid (H3BO3) is primarily used as an? (A) Detergents (B) Antiseptic (C) Textile Industry (D) Flavouring Agent Q. 90. “Table sugar’ is which type of sugar? (A) Sucrose (B) Fructose (C) Galactose (D) Glucose Q. 91. An alloy used in making heating elements for electric heating device is. (A) German Silver (B) Solder (C) Alloy Steel (D) Nichrome Q. 92. The degree of dissociation of an electrolyte depends on. (A) method of dissolution. (B) dilution. (C) impurities. (D) atmospheric pressure. Q. 93. Chlorophyll contains (A) Zinc (B) Iron (C) Magnesium (D) Cobalt Q. 94. The gas causing acid rain in an industrial area is. (A) Methane. (B) Carbon dioxide. (C) Carbon monoxide. (D) Sulphur Dioxide.
Railway/SSC General Science MCQ compendium – By Dr. Harravisher Singh Kahlon Q. 95. . Carbonated Soda water used in many aerated drinks is also knoen as(A) Carbonic Acid (B) Oxalic Acid (C) Formic Acid (D) Boric Acid Q. 96. A Base is a substance which is? 1. Bitter in taste. 2. turns blue litmus paper red. 3.can accept proton. 4. can donate an electron. (A) 1 and 2 only. (B) 2,3 and 4 only. (C) 1 and 4 only. (D) 1,3 and 4 only. Q. 97. Which of the following salt is used as a dehydrating agent for removing moisture from gases? (A) Calcium carbonate (B) Calcium Chloride (C) Calcium Phosphate (D) Pottasium Nitrate Q. 98.Freezing of water and Melting of butter is an. (A) Physical change. (B) Structural change. (C) Chemical Change. (D) Heterogeneous Change. Q. 99. Which part of Potato plant is used as Vegetable ? A. Modified root B. Modified stem C. Modified leaf D. Modified flower Q. 100. Among the following fruits, which one is not a True fruits ? A. Apple B. Tomato C.Coconut D. Date
Q. 101. In which oran of the human body is Ammonia converted into Urea ? A. Kidney B. Liver C. Pancreas D. Spleen Q. 102. Which of the following substance is added to remove the hardness of water? (A) Sodium hydroxide. (B) Quicklime. (C) Washing Soda. (D) Sodium carbonate. Q. 103. Which one of the following elements is required by the human body for the hardening of Bones and teeth ? A. Iodine B. Iron C. Phosphorus D. Potassium Q.104. . Which of the following is used as an Antacid to neutralize hydrochloric acid after heavy eating? (A) Calcium sulphate (B) Sodium Hydroxide (C) Sodium Bicarbonate (D)Calciumoxy chloride Q. 105. 61 Which of the following measurements is not a unit of distance? A. Ammeter B. Cubit C. Parsec D. Angstrom Q. 106. . The old and worn-out blood corpuluscles are destroyed in. (A) Spleen (B) Liver (C) Stomatch (D) Bone marrow
Railway/SSC General Science MCQ compendium – By Dr. Harravisher Singh Kahlon Q. 107. . Self pollination will lead to. (A) outbreeding (B) inbreeding (C) rare breeding (D) overbreeding Q.108. . Hydroponics is a method of culture of plants without using. (A) soil (B) water (C) light (D) sand Q. 109. . The non-green heterotrophic plants of plant kingdom are. (A) fungi (B) mosses (C) ferns (D) algae Q. 110. . Match List I with List II and choose the correct response: List I List II a. Vitamin B1 1. Pyridoxine b. Vitamin B2 2. Cyanocobalamin c. Vitamin B6 3. Thiamine d. Vitamin B12 4. Riboflavin (A) a-4, b-1, c-2, d-3 (B) a-1, b-2 c-3, d-4 (C) a -2, b-3, c-4, d-1 (D) a-3, b-4, c-1, d-2 Q. 111. . Ohm’s law is valid in case of. (A) insulator (B) semiconductor (C) conductor (D) superconductor Q.112. The Laser is a beam of radiations which are. (A) Coherent and non-monochromatic (B) Non-coherent and monochromatic (C) Coherent and monochromatic (D) Non- coherent and nonmonochromatic Q. 113. In electro-refining, the pure metal deposited on. (A) anode (B) vessel (C) electrolyte (D) cathode
Q. 114. Which one of the following is correctly matched? (A) Primary consumer – Leopard (B) Secondary consumer – Grass (C) Decomposer – Bacteria (D) Producer – Deer Q. 115. The deciduous trees will. (A) depend on others for their food (B) shed their leaves every year (C) not lose their leaves (D) synthesise their own food Q. 116. Natural rubber is a polymer of. (A) Styrene (B) Vinyl acetate (C) Propene (D) Isoprene Q. 117. The Ph of lemon juice is expected to be. (A) more than 7 (B) equal to 7 (C) nothing can be predicted (D) less than 7 Q. 118. An example of heterocyclic compound is. (A) Anthracene (B) Naphthalene (C) Furan (D) Benzene Q. 119. EEG records the activity of(A) Heart (C) Muscles (C) Brain (D) Lungs Q. 120. The colour of cow's milk is slightly yellow due to the presence of (A) Xanthophyll (B) Riboflavin (C) Ribulose (D) Carotene Q. 121. The endangered species are listed in what colour data book? (A) blue (B) black (C) red (D) green
Railway/SSC General Science MCQ compendium – By Dr. Harravisher Singh Kahlon Q. 122. Redness in apple is due to (A) Anthocyanin (B) Lycopene (C) Carotene (D) Xanthophyll Q. 123. . On moving an object like a pencil rapidly in front of a glowing TV screen or tube light,we see a number of images. This is due to. (A) Stroboscopic effect (B) Photo-electric effect (C) An optical illusion (D) Electro-magnetic effect Q. 124. . Match list I with list II and select the correct answer using the codes given below the lists : List I List II a. Pickle 1. Carbonic Acid b. Sour Milk 2. Acetic Acid c. Apple 3. Lactic Acid d. Cold drinks 4. Malic Acid Code: (A) (B) (C) (D)
a 1 2 4 3
b 2 3 3 4
c 3 4 1 2
d 4 1 2 1
Q. 127. Which of the following are semiconductors? 1. Silicon 2. Quartz 3. Ceramics 4. Germanium Choose the correct answer from the following alternatives: (A) 1 and 2 (B) 1 and 3 (C) 1 and 4 (D) 3 and 4 Q. 128. . Astronauts in space cannot stand erect. This is because in space. (A) there is no gravity (B) viscous forces of the atmosphere are very strong (C) solar wind exert an upward force (D) atmospheric pressure is very low Q. 129. A person stands at a middle point of a wooden ladder which starts slipping between a vertical wall and a floor of a room, while continuing to remain in a vertical plane. The path traced by the person standing at the middle point of the slipping ladder is. (A) a straight line (B) an elliptical path (C) a circular path (D) a parabolic path
Q. 125. . Direct viewing of sun during total solar eclipse causes irreversible damage to eyes. The retinal burn is caused by which one of the following components of the sun rays ? (A) Heat (B) Rainbow light (C) Ultra-violet light (D) Infra-red light
Q. 130. . If the blood group of one parent is AB and that of the other O, the possible blood group of their child would be. (A) A or B (B) A or B or O (C) A or AB or O (D) A or B or AB or O
Q. 126. . The image formed on retina is. (A) equal ot the object but inverted. (B) smaller than the object and striaght. (C) smaller than the object and reverse. (D) equal to the object and straight
Q. 132. The fruit ripening hormone is. (A) Abscisic acid (B) Cytokinin (C) Ethylene (D) Gibberellin
Railway/SSC General Science MCQ compendium – By Dr. Harravisher Singh Kahlon Q. 133. Galena is a major ore of which one of the following elements? . (A) Zinc (B) Aluminium (C) Lead (D) Manganese Q. 134. Which one of the following is the most abundant gas in the earth's atmosphere other than nitrogen and oxygen? (A) Argon (B) Carbon dioxide (C) Hydrogen (D) Methane Q. 135. . What is the cause of the disease myxoedema in adult human beings? (A) Hyperthyroidism (B) Hypothyroidism (C) Hyperparathyroidism (D) Hypoparathyroidism Q. 136. Which one of the following causes the infectious disease Anthrax. (A) Bacteria (B) Fungi (C) Protozoa (D) Virus Q. 137.. Which one of the following is used as a purgative? (A) Calcium chloride (B) Magnesium sulphate (C) Potassium iodide (D) Sodium thiosulphate Q. 138. Which one of the following sets is a part of vitamin B complex? (A) Vitamin, riboflavin, biotin, calciferol (B) Thiamine, riboflavin, retinole, biotin (C) Thiamine, biotin, pyridoxin, ascorbic acid (D) Thiamine, riboflavin, biotin, nicotinic acid Q.139. A metal element and a non-metal element which are obtained in large
quantities from sea-water are respectively: (A) Sodium and iodine (B) Sodium and bromine (C) Magnesium and chlorine (D) Megnesium and bromine Q. 140. Why can Moon be not used as a communication satellite? (A) The distance between Earth and the Moon is not suitable for the purpose. (B) The period of revolution of the Moon is not 24 hours. (C) The Moon does not revolve in the equatorial plane of the earth (D) All the above three are the reasons Q. 141. Rate of photosynthesis is higher in ___ light. (A) White (B) Red (C) Green (D) Blue Q. 142. The stomata will open, when (A) K+ ions move into the guard cells (B) K+ ions move into subsidiary cells (C) Guard cells are flaccid (D) Acidity increases in guard cells Q. 143. Which of the following enzymes is produced by the salivary glands? (A) Pepsin (B) Ptyalin (C) Rennin (D) Trypsin Q.144. Among the following, which one is a major component of biogas (Gobar gas)? (A) Acetylene (B) Ethane (C) Ethylene (D) Methane Q. 145. Which one of the following is a watersoluble vitamin? (A) VitaminA (B) Vitamin C (C) Vitamin D (D) Vitamin K
Railway/SSC General Science MCQ compendium – By Dr. Harravisher Singh Kahlon Q.146. ‘‘Blue tooth’’ technology allows. (A) Signal transmission on mobile phone only (B) Landline phone to mobile phone communication. (C) Satellite television communication. (D) Wireless communication between equipments Q.147. Optic fibres are used in : (A) CAT scans (B) X-ray photos (C) Ultrasound scans (D) Endoscopy Q. 148. The space retaining life in any form is called (A) Biomass (B) Biosphere (C) Lithosphere (D) Hydrosphere Q. 149. A new technology which provides the ability to create an artificial world and to make people interact through it is called : (A) Televirtuality (B) Virtual reality (C) Alternate reality (D) 3-D reality Q. 150. Night photography and photography in mist and fog are possible using ? (A) ultra-violet radiation (B) infra-red radiation (C) microwave radiation (D) gamma radiation Q. 151. An aircraft can perform aerobatic manoeuvres in a vertical loop because of (A) gravity (B) centripetal force (C) weight (D) centrifugal force
Q. 152. The term reactor referred to in waste water treatment is ? (A) Vessel (B) Settling tank (C) Clarifier (D) Aeration tank Q. 153. Fertiliser having high nitrogen content is : (A) Urea (B) Ammonium sulphate (C) Ammonium nitrate (D) Calcium citrate Q.154. A powerful eye irritant present in smoke is ? (A) Nitric Oxide (B) Sulphur dioxide (C) Peroxyacetyl Nitrate (D) Carbon dioxide Q. 155. Which one of the following is a method/ process of disposing of solid waste. (Which cannot be reused or recycled) ? (A) Landfills (B) Incineration (C) Pyrolysis and Gasification (D) All the above Q.156. A clone is a colony of : (A) cells having different shapes (B) cells having similar shape (C) cells having similar genetic constitution (D) cells having different genetic constitutions Q. 157. The pollen grains of flowers pollinated by insects are : (A) smooth and dry (B) rough and sticky (C) rough and dry (D) large and showy
Railway/SSC General Science MCQ compendium – By Dr. Harravisher Singh Kahlon
Railway/SSC General Science MCQ compendium – By Dr. Harravisher Singh Kahlon
