Objective General Knowledge
1. An eye defect which usually results from an unequal curvature of the cornea is
(A) nearsightedness (B) astigmatism (C) colour blindness (D) night blindness
2. The velocity of sound in air (under normal conditions) is
(A) 30 m/sec (B) 320 m/sec (C) 332 m/sec (D) 3,320 m/sec
3. A photo-electric cell converts
(A) sound energy into electrical energy
(B) light energy into electrical energy
(C) an electrical signal into sound waves
(D) electrical energy into light energy
4. Which of the following sounds cannot be heard by human ear ?
(A) 300 vibrations/sec (B) 1,000 vibrations/sec (C) 10,000 vibrations/sec (D) 30,000 vibrations/sec
5. If force is expressed in newton and the distance in metre, then the work done is expressed in
(A) Joule (B) Kg wt (C) Kg wt m (D) Watt
6. The Law of Natural Selection is associated with
(A) Dalton (B) Darwin (C) Kepler (D) Mendel
7. When cream is separated from milk
(A) the density of milk increases
(B) the density of milk decreases
(C) the density of milk remains unchanged
(D) it becomes more viscous
8. The element of an electric stove is made of
(A) copper (B) aluminium (C) magnalium (D) nicrome
9. The life history of human malarial parasite in Anopheles was first described by
(A) Patrick Manson (B) Laveran (C) Ronald Ross (D) Richard Pfeiffer
10. Which of the following is based on the process of fusion ?
(A) Atom bomb (B) Hydrogen bomb (C) Ordinary bomb (D) Napalm bomb
11. Hybridisation is
(A) downward movement of water through soil
(B) a process of tilling the land
(C) decayed vegetable matter
(D) cross-fertilisation between two varieties
12. Of the following foods, which one is the best source of protein ?
(A) Butter (B) Fish (C) Lettuce (D) Milk
13. The red blood cells are formed in the
(A) heart (B) liver (C) lymph nodes (D) bone marrow
14. Wet-bulb and dry-bulb thermo meters are used to determine
(A) the minimum temperature at a place in any 24-hour period
(B) relative humidity
(C) air pressure
(D) the maximum temperature at a place in any 24-hour period
15. One of the isotopes of iodine has a "half life" of 25 minutes. This information tells us that if we start with a given quantity of the isotopes, 50 minutes later there will remain
(A) one-fourth of the original amount
(B) none
(C) one-half of the original amount
(D) approximately the same amount
16. The most abundant element in the earth's atmosphere is
(A) carbon dioxide (B) hydrogen (C) oxygen (D) nitrogen
17. Exposure to sunlight helps a person improve his health because
(A) the infra-red light kills bacteria in the body
(B) resistance power increases
(C) the pigment cells in the skin get stimulated and produce a healthy tan
(D) the ultraviolet rays convert skin oil into Vitamin D
18. Small amounts of iodine are necessary in our diet to
(A) prevent pellagra
(B) compensate for underactivity of the thyroid gland
(C) stimulate clotting of blood
(D) stimulate pituitary gland
19. On a sudden cardiac arrest, which of the following is advised as a first step to revive the functioning of human heart ?
(A) Mouth to mouth resuscitation
(B) Giving external cardiac massage
(C) Sprinkling water on the face
(D) Giving cool water to drink
20. A triode differs from a diode in the way that
(A) it can amplify a signal
(B) it has vacuum inside
(C) it has a heated cathode
(D) its current is caused by the photoelectric effect
21. Which of the following vitamins is helpful for coagulation of blood ?
(A) C (B) D (C) E (D) K
22. For purifying drinking water, alum is used
(A) for coagulation of mud particles
(B) to kill bacteria
(C) to remove salts
(D) to remove gases
23. A weather balloon is not fully inflated on the ground because
(A) if the balloon is fully inflated, it may not remain stable in a storm
(B) the air inside the balloon expands as it rises and may burst
(C) it cannot withstand the outside pressure if fully inflated
(D) None of these
24. Vitamin B12 is most useful for combating
(A) anaemia (B) goitre (C) night blindness (D) rickets
25. The volume of which of the following materials decreases when it is heated from 0°C to 5°C ?
(A) Air (B) Copper (C) Water (D) Mercury
26. On a night when the sky is clear, the temperature may dip considerably; on a cloudy night the temperature will usually dip much less. The reason for this difference is that
(A) the clear sky allows radiant energy to escape readily from the earth
(B) on a cloudy night the clouds are warm and therefore retard the cooling
(C) the clear sky allows the cold of outer space to reach the earth
(D) currents of air carry the heat away from the earth on a clear night
27. Which of the following chemicals is useful in photography ?
(A) Aluminium hydroxide (B) Potassium nitrate (C) Silver bromide (D) Sodium chloride
28. The purest form of water can be obtained from
(A) a deep tubewell (B) a running stream (C) a hot-water spring (D) a heavy shower of rain
29. Which of the following vitamins is stored in the liver ?
(A) Vitamin A (B) Vitamin C (C) Vitamin E (D) Vitamin K
30. Which of the following is needed by a person suffering from diabetes ?
(A) Antibiotics (B) Insulin (C) Penicillin (D) Streptomycin
31. An element common to all acids is
(A) oxygen (B) hydrogen (C) sulphur (D) chlorine
32. Which of the following statements relating to sound and light is true ?
(A) Light is a form of kinetic energy, whereas sound is a form of potential energy.
(B) Light can be reflected but sound cannot be.
(C) Light travels faster in air than sound does.
(D) Sound travels in waves but light does not.
33. Radioactive substances can be produced readily in
(A) an electron gun (B) an atomic pile (C) a transistor (D) a Wilson cloud chamber
34. The method of estimating the age of the crust of the earth, which is now believed to be the most accurate, makes use of the rate of
(A) accumulation of sedimentary beds
(B) accumulation of salt in the ocean
(C) atomic disintegration (radio-activity)
(D) loss of heat by the earth
35. When a given amount of air is cooled
(A) the amount of moisture it can hold decreases
(B) its absolute humidity decreases
(C) its relative humidity remains constant
(D) its absolute humidity increases
36. With the present-day advancement in medical techniques, transplants are possible in all of the following except
(A) artery (B) bone (C) cornea (D) kidney
37. A transistor is most likely to be found in a
(A) fuse (B) fluorescent lamp (C) hearing aid (D) wrist watch
38. A person born with the inner ear missing
(A) would not have the Eustachian tube
(B) would never be able to hear sound
(C) would be able to hear only with an electronic hearing aid
(D) could only hear a loud explosion
39. The possibility of hereditary variation is greatest when
(A) self-fertilisation occurs, as in some plants
(B) an abundant amount of food is provided for the egg
(C) organisms reproduce sexually
(D) organisms reproduce asexually
40. Steel is more elastic than rubber because
(A) its density is high
(B) it is a metal
(C) ratio of stress to strain is more
(D) ratio of stress to strain is less
41. Free surface of a liquid behaves like a sheet and tends to contract to the smallest possible area due to the
(A) force of adhesion (B) force of friction (C) centrifugal force (D) force of cohesion
42. If speed of rotation of the earth increases, weight of the body
(A) increases (B) remains unchanged (C) decreases (D) may decrease or increase
43. The buoyancy depends on
(A) the shape of the body
(B) the mass of the body
(C) the mass of the liquid displaced
(D) the depth to which the body is immersed
44. The working of a rocket is based on the principle of
(A) electricity (B) Kepler's Law (C) Newton's Law (D) conservation of momentum
45. Friction can be reduced by changing over from
(A) sliding to rolling (B) rolling to sliding (C) potential energy to kinetic energy (D) dynamic to static
46. Which of the following is a physical change ?
(A) Oxidation (B) Reduction (C) Decomposition (D) Sublimation
47. Pressure cooker cooks rice faster because
(A) it always lets the steam escape
(B) high pressure crushes the hard covering of rice grains
(C) it does not let the heat energy escape easily
(D) high pressure raises the boiling point of water
48. The isotopes of an element contain the same number of
(A) neutrons and protons
(B) protons but different number of neutrons
(C) neutrons and protons but different number of electrons
(D) neutrons and electrons but different number of protons
49. The reaction which converts sugar solution into alcohol is an example of
(A) saponification (B) hydrogenation (C) fermentation (D) hydrolysis
50. The Rh factor refers to
(A) a protein substance found in the blood of some people
(B) a hormone carried by the blood
(C) the ratio of red corpuscles to white corpuscles in the blood
(D) a process that speeds up the clotting of blood
51. The greatest value of bees to mankind is in
(A) supplying of food for birds
(B) insuring pollination of certain crop plants
(C) storing honey for man's use
(D) furnishing beeswax needed in certain specialised industries
52. All of the following are examples of chemical changes except the
(A) magnetising of iron (B) rusting of iron (C) digestion of food (D) souring of milk
53. The chief purpose of crop rotation is to check the loss of topsoil
(A) by water erosion (B) by wind erosion (C) by weathering (D) of its mineral content
54. Which of the following acts as a resistance against disease in the body ?
(A) Carbohydrates (B) Red corpuscles (C) Vitamins (D) White corpuscles
55. What is the function of a dynamo ?
(A) To convert heat energy into light energy
(B) To convert light energy into heat energy
(C) To convert mechanical energy into electrical energy
(D) To convert electrical energy into mechanical energy
56. The chief constituent of gobar gas is
(A) ethane (B) methane (C) hydrogen (D) carbon dioxide
57. Acceleration is the rate of change of
(A) direction (B) distance (C) speed (D) weight
58. A body falling freely from a height towards the earth moves with uniform
(A) speed (B) velocity (C) acceleration (D) weight
59. Escape velocity of a rocket fired from the earth towards the moon is a velocity to get rid of the
(A) earth's gravitational pull
(B) moon's gravitational pull
(C) centripetal force due to the earth's rotation
(D) pressure of the atmosphere
60. The number of chromosomes in human body is
(A) 42 (B) 44 (C) 46 (D) 48
61. The theory of inheritance of acquired characters was propounded by
(A) Charles Darwin (B) Gregor Mendel (C) J.B. Lamarck (D) Weismann
62. Which one of the following is not allied to Geophysical Sciences ?
(A) Hydrology (B) Meteorology (C) Palaeontology (D) Seismology
63. Brain of a normal human adult weighs about
(A) 1 lb (B) 2 lb (C) 3 lb (D) 4 lb
64. Photophobia is
(A) a disease caused by too much sunlight
(B) abnormal intolerance of light
(C) the adjustment of the eye for light
(D) the ability to perceive light
65. Cancer is a disease which
(A) cannot be spread by those who have it
(B) is found only in human beings
(C) develops only in certain organs of the body
(D) is passed from generation to generation
66. The moon has no atmosphere because
(A) no atmosphere has ever formed there
(B) the rocky surface completely absorbed the gases
(C) due to the low temperature, gases have condensed
(D) its gravitational pull is not strong enough to hold an atmosphere
67. When a moving bus stops suddenly, the passengers are pushed forward because of the
(A) friction between the earth and the bus
(B) friction between the passengers and the earth
(C) inertia of the passengers
(D) inertia of the bus
68. Which of the following is not an attribute of bacterium ?
(A) Ability to arise from non-living matter (B) Growth (C) Reproduction (D) Respiration
69. Who is credited with the development of polio vaccine ?
(A) Linus Pauling (B) Jonas Salk (C) Melvin Calvin (D) Selman Waksman
70. Which one of the following statements regarding sound is true ?
(A) It travels at its greatest speed in vacuum.
(B) It produces transverse vibrations in the medium in which it travels.
(C) Its source is always a vibrating material.
(D) It cannot travel through liquids.
71. The clear sky looks blue because of
(A) reflection of light (B) refraction of light (C) diffraction of light (D) dispersion of light
72. Which of the following in the human body is popularly called the 'Adam's Apple' ?
(A) Adrenal (B) Liver (C) Thyroid (D) Thymus
73. The drug quinine is used in the treatment of
(A) bubonic plague (B) malaria (C) typhus (D) yellow fever
74. Reproductive cells in normal human beings are produced
(A) in greater numbers for a longer period of time in the male
(B) for a longer period in the female than in the male
(C) in equal numbers in both sexes
(D) in greater numbers by the female than by the male
75. The conservation of hawks and owls is important to mankind chiefly because these birds eat
(A) numerous weed seeds (B) harmful birds (C) many harmful rodents (D) harmful reptiles
76. If the plane of the earth's equator were not inclined to the plane of the earth's orbit,
(A) the year would be longer
(B) the winters would be longer
(C) there would be no change of seasons
(D) the summers would be warmer
77. Which one of the following elements is least likely to be found in commercial fertilisers ?
(A) Nitrogen (B) Phosphorus (C) Potassium (D) Silicon
78. Lime is sometimes applied to soil in order to
(A) increase the alkalinity of the soil
(B) increase the acidity of the soil
(C) restore nitrates to the soil
(D) make the soil more porous
79. An element found in all organic compounds is
(A) oxygen (B) calcium (C) nitrogen (D) carbon
80. Most commonly used bleaching agent is
(A) alcohol (B) carbon dioxide (C) chlorine (D) sodium chloride
81. Which of the following disease is generally spread by fleas ?
(A) Small pox (B) Tetanus (C) Typhus (D) Yellow fever
82. All of the following are plant products except
(A) cork (B) hemp (C) silk (D) linen
83. Which of the following colours has got the maximum refractive index for glass ?
(A) Blue (B) Green (C) Red (D) Indigo
84. For digestion of fat, bile is needed. This is secreted by the
(A) stomach (B) pituitary gland (C) pancreas (D) liver
85. Which one of the following substances is obtained by the fractionation of human blood ?
(A) Antivenom serum (B) Gamma globulin (C) Polio vaccine (D) Diphtheria antitoxin
86. Of the blood groups A, B, AB and O, which one is transfused into a person whose blood group is A ?
(A) Group A only (B) Group B only (C) Group A and O (D) Group AB only
87. The three abundant elements in the earth's crust are aluminium, oxygen and silicon. The correct order of their abundance is
(A) oxygen, aluminium, silicon
(B) aluminium, silicon, oxygen
(C) oxygen, silicon, aluminium
(D) silicon, oxygen, aluminium
88. Penicillin is widely used as
(A) an antiseptic (B) a disinfectant (C) an antibiotic (D) an insecticide
89. Excessive secretion from the pituitary gland in children results in
(A) increased height (B) retarded growth (C) weakening of bones (D) None of the above
90. Weight of an object put in a satellite orbiting in space around the earth is
(A) the same as on the earth
(B) slightly more than that on the earth
(C) less than that on the earth
(D) reduced to zero
91. Which of the following food articles contains only one of the five constituents of diet, viz. fats, carbohydrates, proteins, mineral salts and vitamins ?
(A) Bread (B) Mango (C) Milk (D) Sugar
92. In which of the following pairs, the two substances forming the pair are chemically most dissimilar ?
(A) Sugar and paper (B) Butter and paraffin wax (C) Chalk and marble (D) Charcoal and diamond
93. In which season do we need more fats ?
(A) Rainy season (B) Spring (C) Winter (D) Summer
94. Which out of the following organs does not eliminate waste products from the body ?
(A) Large intestine (B) Liver (C) Kidney (D) Skin
95. Superconductivity is a phenomenon in which the resistance of a substance
(A) increases with temperature
(B) decreases with temperature
(C) does not change with temperature
(D) becomes zero at very low temperatures
96. Liquids transmit pressure equally in all directions. This is known as
(A) Boyle-Pascal's Law (B) Pascal's Law (C) Archimedes' Principle (D) None of the above
97. Primary rainbow is formed when light suffers
(A) two internal refractions before emerging out of the drop
(B) one internal refraction before emerging out of the drop
(C) no internal refraction
(D) either one or two internal refractions before emerging out of the drop
98. Astigmatism (for a human eye) can be removed by using
(A) concave lens (B) convex lens (C) cylindrical lens (D) prismatic lens
99. How can the spherical aberration of a human eye be corrected ?
(A) By using a cylindrical lens
(B) By using a plano-convex lens
(C) By using a thin lens
(D) None of the above
100. An electric bell is placed inside a bell jar which is connected to a vacuum pump. When the bell jar is completely evacuated
(A) no sound can be heard
(B) the loudness of the sound will remain unchanged
(C) the loudness of the sound will increase
(D) the loudness of the sound will decrease
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