1. The force which tries to bring the body back to
its mean position is called
Correct : B. restoring force
2. In which of the following media will sound
travel the fastest?
Correct : A. solid
3. Sound waves in air are _____ waves.
Correct : A. longitudinal
4. Sound waves cannot pass through
Correct : D. a perfect vacuum
5. Out of the following, which frequency is not
clearly audible to the human ear?
Correct : B. 30,000 Hz
6. The distance between two consecutive crests is
L, then the wavelength is given by
Correct : D. L
7. The frequency of a wave is 5 Hz. It refers to
(type of wave)
Correct : C. infrasonics
8. A pulse is a wave
Correct : B. of short duration
9. Sound travels fastest in
Correct : B. steel
10. Which of the following types of waves is
different from others?
Correct : D. Sound waves
11. Waves produced by supersonic jet planes are
Correct : A. shock waves
12. Echo is produced due to
Correct : A. reflection of sound
13. SONAR is based on the principle of
Correct : A. echo
14. The audible range of frequency is
Correct : A. 20 Hz to 20,000 Hz
15. Which of the following frequencies of sound
cannot be heard by human beings?
Correct : A. 5 Hz
16. The mirror used in automobiles to see the rear
field of view is
Correct : B. convex
17. The mirror used in search lights is
Correct : A. concave
18. Shaving mirrors are
Correct : B. concave mirrors
19. The laws of reflection are true for
Correct : D. all reflecting surfaces
20. When the object is at focus of a concave mirror,
the image is formed at
Correct : D. infinity
21. Which of the following is a non-luminous body?
Correct : D. earth
22. A body which allows most of the light to pass
through it is called a
Correct : A. transparent body
23. During the 19th century, light was considered to
be a stream of particles called
Correct : C. corpuscles
24. Who first proposed that light was wave-like in
character?
Correct : A. Huygens
25. The screen behind the eye lens is called the
Correct : C. retina
26. The middle vascular coat that darkens the eye chamber and prevents refraction by absorbing the light rays is
Correct : A. choroid
27. The amount of light entering the eye is
controlled by the
Correct : C. iris
28. The eye lens is a
Correct : A. transparent double-convex lens
29. The eye lens contains a watery liquid called the
Correct : A. aqueous humour
30. Long-sightedness is caused by the eyeball
being too short. It can be corrected by the use of a
Correct : A. convergent lens
31. A lens which is thicker in the middles and
thinner at the edges is called a _____ lens.
Correct : A. convex
32. A lens which is thinner at the middles and
thicker at the edges is called a _____ lens.
Correct : B. concave
33. Which of the following lens is used to minimise
hypermetropia?
Correct : A. convex lens
34. Most of the refraction of light takes place in the
Correct : B. cornea
35. When the light is very bright,
Correct : B. the iris makes the pupil contract
36. Who discovered by his experiments with glass
prisms that white light consists of seven colours?
Correct : A. Newton
37. Autosomes in humans are paired in
Correct : C. 22 pairs
38. The light which refracts most while passing
through a prism is
Correct : B. violet
39. The planet having the largest number of
satellites amongst the following is
Correct : B. Saturn
40. In the absence of his tone proteins in prokaryotes, the an ioinic charges of each inter nucleotide phosphate in DNA is neutralized by
Correct : B. polyamines
41. Phagocytosis and pinocytosis are collectively
termed as
Correct : A. endocytosis
42. Which one of the following is called pacemaker
of the heart?
Correct : A. SA node
43. The life span of human WBCs is normally
Correct : A. 12-13 days
44. Oxygenated bold is carried by
Correct : A. pulmonary vein
45. The reserve food in fungal cell is
Correct : C. glycogen
46. Trypanosoma is
Correct : D. protozoa
47. Seeds are called the products of sexual
reproduction due to
Correct : D. are formed by fusion of gametes
48. The most essential organ for fertilization is
Correct : D. mature ovule
49. BCG vaccine is used to protect a child from
Correct : D. tuberculosis
50. Bulliform cells are present in
Correct : A. lower epidermis of monocot leaves
51. Sebaceous glands are found in
Correct : A. dermis of skin of mammals
52. One of the most resistant known biological
material is
Correct : C. sporopollenin
53. Parthenogenesis is a type of
Correct : B. asexual reproduction
54. Which one of the following is not correct about cathode rays?
Correct : C. The nature of cathode rays depends upon the nature of gas taken in the discharge tube
55. Cathode rays are produced when high electric voltage is applied to the gas held in a discharge tube at a pressure of about
Correct : A. 10-3 atm
56. The electronic configuration of chlorine with
atomic number 17 is
Correct : A. 2, 8, 7
57. A divalent cation has 10 electrons and 12 neutrons. The atomic number and mass number of the elements are
Correct : A. 12, 24
58. Isotopes differ in the number of
Correct : C. neutrons
59. The only elements having no neutron is
Correct : A. protium
60. -particle are
Correct : A. double positive helium nucleus
61. Neutron was discovered by
Correct : B. James Chadwick
62. Man made synthetic fibre is
Correct : C. nylon
63. Which one of the following statements is not
correct?
Correct : A. All metals are solid at room temperature
64. Among metals, the poorest conductor of heat is
Correct : A. lead
65. The correct order of electrical conductivity is
Correct : D. Ag > Cu > Au > Al
66. Beakers A, B and C contain zinc sulphate, silver nitrate and iron (II) sulphate solutions, respectively. copper pieces are added to each beaker. Blue colour will appear to in case of
Correct : B. beaker B
67. A particle is projected up with an initial velocity of 80 ft/s. The ball will attain height of 96 ft/s from the ground after
Correct : A. 2.0 and 3.0 s
68. A stone is dropped into water from abridge 44.1 m above the water. Another stone is thrown vertically downward 1 s later. Both strike the water simultaneously. What was the initial speed of the second stone?
Correct : A. 12.25 m/s
69. Which one of the following statements is wrong?
Correct : D. Sound travels faster in vacuum than in air
70. The process of respiration is concerned with
Correct : D. intake of oxygen
71. Cyanobacteria are
Correct : C. algae
72. Which one of the following statements is wrong?
Correct : C. Ammeter is placed in parallel
73. A. The resistance of super conductor is zero. B. The super conductor are used for the transmission of electric power.
Correct : C. A is true and B is false
74. The resistivity of a wire
Correct : D. None of the above
75. Ohm’s law is true
Correct : B. for metallic conductor
76. Which of the following is not an endocrine
gland?
Correct : A. Salivary gland
77. Two rods of same material and length have their electric resistance to ratio 1 : 2. When both rods are dipped in water, the correct statement will be
Correct : C. Both have same loss of weight
78. The temperature of the Sun is measure with
Correct : C. pyrometer
79. In case of uniform circular motion, which of the following physical quantity do not remain constant?
Correct : B. Momentum
80. Inertia is that property of a body by virtue of which the body is
Correct : D. unable to change by itself the state of rest and of
81. A rider on horse back falls when horse starts running all of a sudden because
Correct : C. inertia of rest keeps the upper part of body at rest whereas lower part of the body moves forward with the horse
82. A person is standing in a elevator. In which
situation, he finds his weight less than actual when
Correct : B. the elevator moves downward with constant acceleration
83. When the speed of a moving body is doubled
Correct : B. its momentum is doubled
84. Which of the following is not a chemical
reaction?
Correct : C. Dissolution of sugar in water
85. The physical state of water at 100°C is
Correct : C. gas
86. Which of the following characteristics are associated with gaseous state?
Correct : C. No fixed shape and size, highly compressible
87. A gas can be liquefied by
Correct : D. increasing the pressure and lowering the temperature
88. The term ‘rancidity’ represents
Correct : B. oxidation of fatty food
89. Evaporation of liquid occur at
Correct : C. all temperature
90. Largest part of the brain of human being is
called
Correct : B. cerebral hemisphere
91. Which part of human brain is more developed
in comparison to others?
Correct : A. Cerebrum
92. Hearing is controlled by
Correct : C. hypothalamus
93. Example of analogy is
Correct : A. wings of bird and butterfly
94. Removal of anthers from flowers is the process
which is known as
Correct : A. emasculation
95. Improved variety of paddy (rice) is
Correct : B. Sonalika
96. Which one of the following crop doesn’t
required more nitrogen fertilizers?