MCQOPTIONS
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MCQOPTIONS
This section includes 93 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which tube used to produce X-ray?~! |
| A. | Coolidge tube |
| B. | X-ray tube |
| C. | Roentgen |
| D. | None of these |
| Answer» B. X-ray tube | |
| 2. |
Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in |
| A. | 4.2 seconds |
| B. | 42 seconds |
| C. | 4.2 years |
| D. | 42 years |
| Answer» D. 42 years | |
| 3. |
Stars which appear single to the naked eye but are double when seen through a telescope are%! |
| A. | novas and supernovas |
| B. | binaries |
| C. | asteroids |
| D. | quasars |
| Answer» C. asteroids | |
| 4. |
Sir C.V. Raman was awarded Nobel Prize for his work connected with which of the following phenomenon of radiation?%! |
| A. | Scattering |
| B. | Diffraction |
| C. | Interference |
| D. | Polarization |
| Answer» B. Diffraction | |
| 5. |
One should not connect a number of electrical appliances to the same power socket because%! |
| A. | this can damage the appliances due to overloading |
| B. | this can damage the domestic wiring due to overloading |
| C. | this can damage the electrical meter |
| D. | the appliance will not get full voltage |
| Answer» C. this can damage the electrical meter | |
| 6. |
Radio telescopes are better than optical telescopes because%! |
| A. | they can detect faint galaxies which no optical telescope can |
| B. | they can work even in cloudy conditions |
| C. | they can work during the day and night |
| D. | All of the above |
| Answer» E. | |
| 7. |
Let a thin capillary tube be replaced with another tube of insufficient length then, we find water%! |
| A. | will overflow |
| B. | will not rise |
| C. | depressed |
| D. | change its meniscus |
| Answer» C. depressed | |
| 8. |
Siphon will fail to work if:%! |
| A. | The densities of the liquid in the two vessels are equal. |
| B. | The level of the liquid in the two vessels are at the same height. |
| C. | Both its limbs are of unequal length. |
| D. | The temperature of the liquids in the two vessels are the same. |
| Answer» C. Both its limbs are of unequal length. | |
| 9. |
Railway tracks are banked on curves%! |
| A. | necessary centrifugal force may be obtained from the horizontal component weight of the train |
| B. | to avoid frictional force between the tracks and wheels |
| C. | necessary centripetal force may be obtained from the horizontal component of the weight of the train |
| D. | the train may not fly off in the opposite direction |
| Answer» D. the train may not fly off in the opposite direction | |
| 10. |
Of the following properties of a wave, the one that is independent of the other is its%! |
| A. | amplitude |
| B. | velocity |
| C. | wavelength |
| D. | frequency |
| Answer» B. velocity | |
| 11. |
RADAR is used for:%! |
| A. | locating submerged submarines. |
| B. | receiving a signals in a radio receiver. |
| C. | locating geostationary satellites. |
| D. | detecting and locating the position of objects such as Aeroplanes. |
| Answer» E. | |
| 12. |
It takes much longer to cook food in the hills than in the plains, because%! |
| A. | in the hills the atmospheric pressure is lower than that in the plains and therefore water boils at |
| B. | due to low atmospheric pressure on the hills, the water boils at a temperature higher than 100o |
| C. | in the hills the atmospheric density is low and therefore a lot of heat is lost to the atmosphere |
| D. | in the hills the humidity is high and therefore a lot of heat is absorbed by the atmosphere leaving |
| Answer» B. due to low atmospheric pressure on the hills, the water boils at a temperature higher than 100o | |
| 13. |
One thousand microns is equal to%! |
| A. | 10-3m |
| B. | 10-6m |
| C. | 10-9m |
| D. | 10-12m |
| Answer» B. 10-6m | |
| 14. |
Light from the Sun reaches us in nearly%! |
| A. | 2 minutes |
| B. | 4 minutes |
| C. | 8 minutes |
| D. | 16 minutes |
| Answer» D. 16 minutes | |
| 15. |
Out of the following, which is not emitted by radioactive substance?%! |
| A. | Electrons |
| B. | Electromagnetic radiations |
| C. | Alpha particles |
| D. | Neutrons |
| Answer» E. | |
| 16. |
*$_Mica is used in electrical appliances such as electric iron because mica is? |
| A. | a good conductor of heat but a bad conductor of electricity |
| B. | a bad conductor of heat but a good conductor of electricity |
| C. | a good conductor of heat as well as electricity |
| D. | a bad conductor of heat as well as electricity |
| Answer» B. a bad conductor of heat but a good conductor of electricity | |
| 17. |
*/*_Siphon will fail to work if:? |
| A. | The densities of the liquid in the two vessels are equal. |
| B. | The level of the liquid in the two vessels are at the same height. |
| C. | Both its limbs are of unequal length. |
| D. | The temperature of the liquids in the two vessels are the same. |
| Answer» C. Both its limbs are of unequal length. | |
| 18. |
*/*_An aeroplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically at a point A on the ground a bomb is released from it. The bomb strikes the ground at point B. The distance AB is? |
| A. | 1200 m |
| B. | 0.33 km |
| C. | 3.33 km |
| D. | 33 km |
| Answer» D. 33 km | |
| 19. |
*/*_Railway tracks are banked on curves? |
| A. | necessary centrifugal force may be obtained from the horizontal component weight of the train |
| B. | to avoid frictional force between the tracks and wheels |
| C. | necessary centripetal force may be obtained from the horizontal component of the weight of the train |
| D. | the train may not fly off in the opposite direction |
| Answer» D. the train may not fly off in the opposite direction | |
| 20. |
*/*_It takes much longer to cook food in the hills than in the plains, because? |
| A. | in the hills the atmospheric pressure is lower than that in the plains and therefore water boils at |
| B. | due to low atmospheric pressure on the hills, the water boils at a temperature higher than 100o |
| C. | in the hills the atmospheric density is low and therefore a lot of heat is lost to the atmosphere |
| D. | in the hills the humidity is high and therefore a lot of heat is absorbed by the atmosphere leaving |
| Answer» B. due to low atmospheric pressure on the hills, the water boils at a temperature higher than 100o | |
| 21. |
*/*_One thousand microns is equal to? |
| A. | 10-3m |
| B. | 10-6m |
| C. | 10-9m |
| D. | 10-12m |
| Answer» B. 10-6m | |
| 22. |
*/*_RADAR is used for:? |
| A. | locating submerged submarines. |
| B. | receiving a signals in a radio receiver. |
| C. | locating geostationary satellites. |
| D. | detecting and locating the position of objects such as Aeroplanes. |
| Answer» E. | |
| 23. |
*/*_Of the following properties of a wave, the one that is independent of the other is its? |
| A. | amplitude |
| B. | velocity |
| C. | wavelength |
| D. | frequency |
| Answer» B. velocity | |
| 24. |
*/*_Out of the following, which is not emitted by radioactive substance?? |
| A. | Electrons |
| B. | Electromagnetic radiations |
| C. | Alpha particles |
| D. | Neutrons |
| Answer» E. | |
| 25. |
*/*_Let a thin capillary tube be replaced with another tube of insufficient length then, we find water? |
| A. | will overflow |
| B. | will not rise |
| C. | depressed |
| D. | change its meniscus |
| Answer» C. depressed | |
| 26. |
*/*_Light from the Sun reaches us in nearly? |
| A. | 2 minutes |
| B. | 4 minutes |
| C. | 8 minutes |
| D. | 16 minutes |
| Answer» D. 16 minutes | |
| 27. |
*/*_Radio telescopes are better than optical telescopes because? |
| A. | they can detect faint galaxies which no optical telescope can |
| B. | they can work even in cloudy conditions |
| C. | they can work during the day and night |
| D. | All of the above |
| Answer» E. | |
| 28. |
*/*_One should not connect a number of electrical appliances to the same power socket because? |
| A. | this can damage the appliances due to overloading |
| B. | this can damage the domestic wiring due to overloading |
| C. | this can damage the electrical meter |
| D. | the appliance will not get full voltage |
| Answer» C. this can damage the electrical meter | |
| 29. |
*/*_Sir C.V. Raman was awarded Nobel Prize for his work connected with which of the following phenomenon of radiation?? |
| A. | Scattering |
| B. | Diffraction |
| C. | Interference |
| D. | Polarization |
| Answer» B. Diffraction | |
| 30. |
*/*_Stars which appear single to the naked eye but are double when seen through a telescope are? |
| A. | novas and supernovas |
| B. | binaries |
| C. | asteroids |
| D. | quasars |
| Answer» C. asteroids | |
| 31. |
*/*_Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in? |
| A. | 4.2 seconds |
| B. | 42 seconds |
| C. | 4.2 years |
| D. | 42 years |
| Answer» D. 42 years | |
| 32. |
*/*_Optical fibre works on the? |
| A. | principle of refraction |
| B. | total internal reflection |
| C. | scattering |
| D. | interference |
| Answer» C. scattering | |
| 33. |
*/*_Rainbow is due to? |
| A. | absorption of sunlight in minute water droplets |
| B. | diffusion of sunlight through water droplets |
| C. | ionisation of water deposits |
| D. | refraction and reflection of sunlight by water droplets |
| Answer» E. | |
| 34. |
*/*_One watt-hour is equivalent to? |
| A. | 6.3 x 103 J |
| B. | 6.3 x 10-7 J |
| C. | 3.6 x 103 J |
| D. | 3.6 x 10-3 J |
| Answer» D. 3.6 x 10-3 J | |
| 35. |
*/*_Large astronomical telescopes always use as objective? |
| A. | lens |
| B. | mirror |
| C. | combinations of lenses |
| D. | None of the above |
| Answer» D. None of the above | |
| 36. |
*/*_Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open? |
| A. | at sea level |
| B. | at the top of Mt. Everest |
| C. | at a place in a valley below sea level |
| D. | in an aeroplane flying at a height of 10,000 m with inside pressure maintained at the sea level |
| Answer» D. in an aeroplane flying at a height of 10,000 m with inside pressure maintained at the sea level | |
| 37. |
_ One nanometer is equal to$? |
| A. | 10-6m |
| B. | 10-8m |
| C. | 10-9m |
| D. | 10-5m |
| Answer» D. 10-5m | |
| 38. |
_ The absorption of ink by blotting paper involves:$? |
| A. | Viscosity of ink |
| B. | Capillary action phenomenon |
| C. | Diffusion of ink through the blotting |
| D. | Siphon action |
| Answer» C. Diffusion of ink through the blotting | |
| 39. |
_ Rain is falling vertically downwards. To a man running east-wards, the rain will appear to be coming from$? |
| A. | east |
| B. | west |
| C. | northeast |
| D. | southeast |
| Answer» B. west | |
| 40. |
__Light travels at the fastest speed in:__ |
| A. | glass |
| B. | water |
| C. | hydrogen |
| D. | vacuum |
| Answer» E. | |
| 41. |
__Stars twinkle because__ |
| A. | the intensity of light emitted by them changes with time. |
| B. | the distance of the stars from the earth changes with time. |
| C. | the refractive index of the different layers of the earth's atmosphere changes continuously. |
| D. | None of these |
| Answer» D. None of these | |
| 42. |
__Sound travels with a different speed in media. In what order does the velocity of sound increase in these media?__ |
| A. | Water, iron and air |
| B. | Iron, air and water |
| C. | Air, water and iron |
| D. | Iron, water and air |
| Answer» D. Iron, water and air | |
| 43. |
__Materials for rain-proof coats and tents owe their water-proof properties to__ |
| A. | surface tension |
| B. | viscosity |
| C. | specific gravity |
| D. | elasticity |
| Answer» B. viscosity | |
| 44. |
__Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2__ |
| A. | 0.14 m/s |
| B. | 140 m/s |
| C. | 1.4 km/s |
| D. | 14 m/s |
| Answer» E. | |
| 45. |
__Rectifiers are used to convert:__ |
| A. | Direct current to Alternating current |
| B. | Alternating current to Direct current |
| C. | High voltage to low voltage |
| D. | Low voltage to high voltage |
| Answer» C. High voltage to low voltage | |
| 46. |
__Metals are good conductors of electricity because:__ |
| A. | They contain free electrons. |
| B. | The atoms are lightly packed. |
| C. | They have high melting point. |
| D. | All of the above. |
| Answer» B. The atoms are lightly packed. | |
| 47. |
__Mirage is due to:__ |
| A. | Unequal heating of different parts of the atmosphere |
| B. | Magnetic disturbances in the atmosphere |
| C. | Depletion of ozone layer in the atmosphere |
| D. | Equal heating of different parts of the atmosphere |
| Answer» B. Magnetic disturbances in the atmosphere | |
| 48. |
__Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open__ |
| A. | at sea level |
| B. | at the top of Mt. Everest |
| C. | at a place in a valley below sea level |
| D. | in an aeroplane flying at a height of 10,000 m with inside pressure maintained at the sea level |
| Answer» D. in an aeroplane flying at a height of 10,000 m with inside pressure maintained at the sea level | |
| 49. |
__Large astronomical telescopes always use as objective__ |
| A. | lens |
| B. | mirror |
| C. | combinations of lenses |
| D. | None of the above |
| Answer» D. None of the above | |
| 50. |
__One watt-hour is equivalent to__ |
| A. | 6.3 x 103 J |
| B. | 6.3 x 10-7 J |
| C. | 3.6 x 103 J |
| D. | 3.6 x 10-3 J |
| Answer» D. 3.6 x 10-3 J | |