1. A boy is standing in front of a plane mirror at a distance of 3 m from it. What is the distance between the boy and his image?
Correct : B. 6 m
2. Loudness of sound varies directly with vibrating body’s –
Correct : B. Amplitude
3. A thin oil film on a water surface appears coloured because of –
Correct : B. interference
4. Iron which resembles Cobalt and Nickel in properties has been placed far away from these elements. This was one of the limitations of :
Correct : B. Newland's law of octaves
5. How much is the difference of time between any two Consecutive longitudes?
Correct : C. 4 min
6. Which of the following modes of expressing concentration is independent of temperature -
Correct : B. Molality
7. At boiling point of liquids, its –
Correct : C. Temperature remains constant
8. Newton's first law is also known as .
Correct : C. Law of Inertia
9. The humidity of air measured in percentage is called –
Correct : C. relative humidity
10. Who developed the theory of Evolution?
Correct : A. Charles Darwin
11. Which of the following is an insulator?
Correct : D. Glass
12. Name the process by which bubbles from liquid are formed?
Correct : A. Effervescence
13. 'Parsec' is the unit measurement of –
Correct : B. Astronomical distance
14. The phenomenon of change in direction of light when it passes from one medium to another is called -
Correct : C. Refraction
15. The mercury and sodium street lamps light up because of –
Correct : A. Atomic emission
16. Who invented the Lightning Rod in 1749?
Correct : A. Benjamin Franklin
17. When the milk is churned vigorously the cream from it is separated out clue to –
Correct : D. Centrifugal force
18. The temperature at which the catalytic activity of the catalyst is maximum, is called
Correct : D. optimum temperature
19. Which one of the following non-metals is not a poor conductor of electricity?
Correct : B. Selenium
20. Which instrument is used to record Atmospheric pressure?
Correct : B. Barometer
21. Full form of CFL used in place of electric bulbs is –
Correct : A. compact fluorescent lamp
22. A light year is a unit of –
Correct : B. distance
23. An instrument that records earth- quakes is –
Correct : D. Seismograph
24. An object is in static equilibrium when it is .
Correct : A. at rest
25. The study of phenomena at very low temperatures is called -
Correct : D. cryogenics
26. Steel is more elastic than rubber because it –
Correct : C. is deformed very easily
27. Which phenomena shows the particle nature of light?
Correct : C. Photoelectric effect
28. In the names Mangifera indica (mango), Solanum tuberosum (potato) and Panthera leo (lion), the terms Mangifera, Solanum and Panthera represent the higher level of?
Correct : A. Taxon
29. Sound waves in air are .
Correct : B. longitudinal
30. The motion of a body that repeats itself after a regular interval of time is –
Correct : A. a periodic motion
31. When a strong beam of light is passed through a colloidal solution, the light will –
Correct : A. be scattered
32. Which one of the following is not allied to Geophysical Sciences?
Correct : C. Palaeontology
33. The pitch of sound depends on its –
Correct : A. Frequency
34. The ozone layer protects us from -
Correct : A. Ultra violet rays
35. Entropy of the universe is -
Correct : A. continuously increasing
36. For which among the following house appliances, magnet is an essential part?
Correct : D. All of the above
37. Cylindrical lens is used by a person suffering from -
Correct : A. astigmatism
38. Metals are good conductors of electricity because -
Correct : A. they contain free electrons
39. Speed of sound in solids is -
Correct : D. 15 times that in gas/ 15
40. To open a door easily, the handle should be fixed –
Correct : D. None of these
41. Velocity of sound in air does not depend on –
Correct : C. Pressure of air
42. Conversion of sound energy into electrical energy is done by –
Correct : C. Microphone
43. The theory of inheritance of acquired characters was propounded by -
Correct : C. J. B. Lamarck
44. A jet engine works, on the principle of conservation of -
Correct : A. linear momentum
45. Which electromagnetic radiation is used for satellite communication?
Correct : C. Microwave
46. Solar cells work on the principle of –
Correct : A. photovoltaic effect
47. When a piece of stone is immersed in water, it displaces water of equal –
Correct : C. Mass
48. Efficiency of the catalyst depends on its
Correct : C. molecular state
49. The oil in the wick of lamp rises due to
Correct : B. Pheonomenon of capillarity
50. Number of basic SI unit is .
Correct : B. 7
51. Optical fibre works on the -
Correct : B. total internal reflection
52. Gas thermometers are more sensitive than the liquid thermometers because the gases –
Correct : A. have large coefficient of expansion
53. A man standing on a edge of a cliff throws a stone vertically upwards with a certain speed. He then throws another stone downwards with the same speed. Find the ratio of the speeds of the two stones when they hit the ground.
Correct : A. 1 : 1
54. The locomotion of insects to the source of light is called :
Correct : A. Phototropic
55. The splitting of white light into its components is due to:
Correct : D. Dispersion
56. The moment of inertia of a body does not depend upon its –
Correct : B. angular velocity
57. The speed of light will be minimum while passing through -
Correct : D. glass
58. is the cell organelle, in which the biochemical processes of respiration and energy production occur.
Correct : A. Mitochondria
59. Amount of water vapour in a unit volume (Cubic metre) of air is called:
Correct : C. absolute humidity
60. Which waves cannot be transmitted through vacuum -
Correct : C. Sound
61. Super cooling stands for cooling of a liquid –
Correct : B. below freezing point
62. Alcohol is more volatile than water because is lower than water.
Correct : A. its boiling point
63. The boiling point of water depends upon the –
Correct : A. atmospheric pressure
64. The loudness of sound depends upon
Correct : C. Amplitude
65. If no external force acts on a system of bodies, the total linear momentum of the system of bodies remains constant. Which law states this?
Correct : D. Principle of conservation of linear momentum
66. Who among the following is the scalar quantity .
Correct : B. pressure
67. When net torque is zero, will be constant -
Correct : B. angular momentum
68. Elecronegativity is the measure of -
Correct : B. Non-metallic character
69. Which of the following waves cannot be polarized?
Correct : D. Ultrasonic
70. Which one of the following is a vector quantity?
Correct : A. Momentum
71. If the angle of incidence formed on a concave mirror at a point is 30° then the angle of reflection will be:
Correct : B. 30°
72. Which among the following is not a unit of distance?
Correct : B. Longsec
73. The rotational effect of a force on a body about an axis of rotation is described in terms of the
Correct : D. Moment of force
74. Radian per second is unit of .
Correct : D. Angle Velocity
75. Sound of frequency below 20 Hz is called .
Correct : B. infrasonic
76. Which among the following is not an inner planet?
Correct : B. Saturn
77. What is the phenomenon which established the transverse nature of light?
Correct : D. Polarisation
78. During combustion of unsaturated compounds a is seen.
Correct : D. yellow flame
79. Which one among the following doesn't have any effect on velocity of sound?
Correct : C. Humidity
80. When a stone is thrown in the calm water of a pond the waves produced on the surface of water in the pond are –
Correct : B. transverse
81. A cyclone is an engineering device that is used to -
Correct : B. segregate particles
82. The density of water is 1 g/cc. This is strictly valid at –
Correct : B. 4°C
83. Which of the following is one of the commercial products obtained from Gelidium and Gracilaria and are used to grow microbes and in preparations of ice- creams and jellies?
Correct : A. Agar
84. In an electric motor, the energy transformation is from .
Correct : D. electrical to mechanical
85. A radioactive substance does not undergo any change (in mass or charge) during –
Correct : A. ganuna-emission
86. On a rainy day, small oil films on water show brilliant colors. This is due to -
Correct : B. interference
87. The waveform of a certain signal can be studied by –
Correct : D. Sonometer
88. Ultrasonic waves are produced by making use of -
Correct : C. piezo electric material
89. Least audible sound for most of the human ear is –
Correct : B. 0.0002 μ bar
90. Amount of water vapour (gaseous) in a given volume of air (cubic metre) is known as:
Correct : C. Absolute humidity
91. Which of the following is a conductor of electricity?
Correct : C. Salt water
92. The opening and closing of the stomatal pores is a function of the -
Correct : A. Guard cells
93. Which one among the following substances evolved heat when dissolved in water?
Correct : C. Quick lime
94. In the remote control of television, electromagnetic waves used are –
Correct : D. infrared
95. Heat flows as a result of difference of
Correct : A. Temperature
96. Sound and light waves both .
Correct : B. obey the laws of reflection
97. Radioactive elements can be traced out in living cell through a technique called –
Correct : C. Auto radiography
98. Human beings can hear the sound range between:
Correct : D. None of the above
99. Solids which conduct electricity at higher temperature but not at lower temperature are called
Correct : C. semi-conductor
100. In a filament type light bulb most of the electric power consumed appears as –