MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 83 Mcqs, each offering curated multiple-choice questions to sharpen your GK knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
If a person sitting in a lift then when will he feel that his weight gets increased? |
| A. | Going upward with constant velocity |
| B. | Going downward with constant velocity |
| C. | When the elevator going upward expeditiously |
| D. | When the elevator going down expeditiously |
| Answer» D. When the elevator going down expeditiously | |
| 52. |
The time period of a pendulum |
| A. | Depends on the mass |
| B. | Depends on its length |
| C. | Depends on time |
| D. | Depends on temperature |
| Answer» C. Depends on time | |
| 53. |
When a body falls from an aeroplane, there is increase in its |
| A. | Potential energy |
| B. | Kinetic energy |
| C. | Mass |
| D. | Acceleration |
| Answer» C. Mass | |
| 54. |
Atomic bomb theory is based on- |
| A. | on nuclear fusion |
| B. | On nuclear fission |
| C. | Both of the above |
| D. | None of the above |
| Answer» C. Both of the above | |
| 55. |
What constitutes current in a metal wire. |
| A. | neutrons |
| B. | protons |
| C. | electrons |
| D. | None of these |
| Answer» D. None of these | |
| 56. |
Which among the following is a vector quantity? |
| A. | Heat |
| B. | Work |
| C. | Angular momentum |
| D. | Time |
| Answer» D. Time | |
| 57. |
When a stone is thrown in the calm water of a pond the waves produced on the surface of water in the pond are |
| A. | longitudinal |
| B. | waves are not produced |
| C. | Both longitudinal and transverse |
| D. | transverse |
| Answer» E. | |
| 58. |
When a heated electric bulb glows - |
| A. | Electrical energy is completely converted into light. |
| B. | Electrical energy is partly converted into light energy and partly into heat energy |
| C. | Light energy is converted into electrical energy. |
| D. | Electric energy is converted into magnetic energy . |
| Answer» C. Light energy is converted into electrical energy. | |
| 59. |
The sum of the change in kinetic and potential energy is always- |
| A. | Zero |
| B. | Positive |
| C. | Negative |
| D. | None of the above |
| Answer» B. Positive | |
| 60. |
In case of negative work the angle between the force and displacement is- |
| A. | 0 |
| B. | 45 |
| C. | 90 |
| D. | 180 |
| Answer» E. | |
| 61. |
Alternating current is converted to direct current |
| A. | By Transformer |
| B. | By Rectifier |
| C. | By Dynamo |
| D. | By Motor |
| Answer» C. By Dynamo | |
| 62. |
What is the decibel level of sound produced by two persons in conversation? |
| A. | About 30 decibels |
| B. | About 100 decibels |
| C. | About 5 decibels |
| D. | About 10 decibels |
| Answer» B. About 100 decibels | |
| 63. |
What is measured in cusecs? |
| A. | Flow of water |
| B. | Quantity of water |
| C. | Purity of water |
| D. | Depth of water |
| Answer» B. Quantity of water | |
| 64. |
The density of milk can be obtained by the use of |
| A. | Lactometer |
| B. | Thermometer |
| C. | Hydrometer |
| D. | Butyrometer |
| Answer» B. Thermometer | |
| 65. |
The separation of cream from milk by churning is due to |
| A. | Cohesive force |
| B. | Centrifugal force |
| C. | Gravitational force |
| D. | None of the above |
| Answer» C. Gravitational force | |
| 66. |
In which direction the rainbow is seen at 12 noon? |
| A. | In the East |
| B. | It cannot be seen |
| C. | In the West |
| D. | In the South |
| Answer» C. In the West | |
| 67. |
Radioactivity is measured by |
| A. | Seismometer |
| B. | Ammeter |
| C. | Hydrometer |
| D. | Geiger Counter |
| Answer» E. | |
| 68. |
Which set of conditions represents the easiest way to liquefy agas? |
| A. | Low temperature and low pressure |
| B. | High temperature and high pressure |
| C. | Low temperature and high pressure |
| D. | High temperature and low pressure |
| Answer» D. High temperature and low pressure | |
| 69. |
The substance which conducts current in the solid state is |
| A. | iodine |
| B. | sodium chloride |
| C. | diamond |
| D. | graphite |
| Answer» E. | |
| 70. |
Gamma rays can cause |
| A. | burning |
| B. | fever |
| C. | gene mutation |
| D. | sneezing |
| Answer» D. sneezing | |
| 71. |
Who invented electromagnetic theory? |
| A. | Thomas Alva addition |
| B. | J. J. Thomson |
| C. | Michael Faraday |
| D. | None of these |
| Answer» D. None of these | |
| 72. |
The sky appears blue die to |
| A. | Refraction of light |
| B. | Scattering of light |
| C. | Diffraction of light |
| D. | Reflections of light |
| Answer» C. Diffraction of light | |
| 73. |
The air bubble in the water, which will behave like it is |
| A. | Convex mirror |
| B. | Convex lens |
| C. | Concave mirror |
| D. | Concave lens |
| Answer» E. | |
| 74. |
We have reason to see the sun a few minutes before the actual sunrise |
| A. | Scattering of light |
| B. | Diffraction of light |
| C. | Total internal reflection of light |
| D. | Refraction of light |
| Answer» E. | |
| 75. |
The device that converts alternating current to direct current is called |
| A. | inverter |
| B. | rectifier |
| C. | transformer |
| D. | transmitter |
| Answer» C. transformer | |
| 76. |
Transformers are used |
| A. | To convert AC into DC |
| B. | To convert DC to AC |
| C. | To detect DC voltage |
| D. | To oxidation or reduce AC voltage |
| Answer» E. | |
| 77. |
Transformer is used for - |
| A. | To step up DC voltage |
| B. | To step up or step-down AC voltages |
| C. | Converting AC into Dc |
| D. | Converting DC into AC |
| Answer» C. Converting AC into Dc | |
| 78. |
The principle on which optical fiber works is |
| A. | Full internal reflection |
| B. | Refraction |
| C. | Scattering |
| D. | Deviation |
| Answer» B. Refraction | |
| 79. |
Which one of the following SI unit is not correctly matched? |
| A. | Mass-Kg |
| B. | Pressure Dyne |
| C. | Work-Joule |
| D. | Force-Newton |
| Answer» C. Work-Joule | |
| 80. |
Principle of fuse is |
| A. | Heating effect of electricity |
| B. | Magnetic effect of electricity |
| C. | Chemical effect of electricity |
| D. | Mechanical effect of electricity |
| Answer» B. Magnetic effect of electricity | |
| 81. |
Pressure inside a soap bubble is- |
| A. | More than atmospheric pressure |
| B. | Less than atmospheric pressure |
| C. | Equal to atmospheric pressure |
| D. | Half of atmospheric pressure/ |
| Answer» B. Less than atmospheric pressure | |
| 82. |
When ray of light goes from denser to rarer medium then it |
| A. | Bends towards the normal |
| B. | Bends away from the normal |
| C. | Goes Straight |
| D. | Reflected back |
| Answer» C. Goes Straight | |
| 83. |
If the diameter of the capillary is doubled, then the height of the water surface in it rises- |
| A. | Doubles |
| B. | It remains half |
| C. | Not changed |
| D. | Becomes zero |
| Answer» C. Not changed | |