Wednesday, April 24, 2019

WBCS Polity and Constitution MCQs Prelims and Mains

Quiz on General Science (Physics) For WBCS Prelims Exams P4


Physics - 04

16. The ink of pen leaks in an airplane because
(A) High speed of the airplane
(B) Temperature difference
(C) Atmospheric pressure increases.
(D) The pressure of ink inside is more than the outside pressure.

Correct Answer: [D] The pressure of ink inside is more than the outside pressure..
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17. Which one of these is not a measuring instrument?
(A) Picometer
(B) Hygrometer
(C) Barometer
(D) Thermometer.

Correct Answer: [A] Picometer.
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18. A body is acted upon by two unequal forces in opposite directions, but not in one line. The effect is that the body will have
(A) neither the rotational nor the translational motion.
(B) rotational as well as translational motion
(C) only rotational motion.
(D) only translational motion.

Correct Answer: [B] rotational as well as translational motion.
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19. Hydrogen Bombs is based on the principle of
(A) Nuclear fusion
(B) None of the above
(C) Nuclear fission
(D) Nuclear explosion.

Correct Answer: [A] Nuclear fusion.
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20. When a ship enters the sea from a river, it floats up because
(A) The density of the river water is greater
(B) Saltwater of the sea is denser
(C) Seawater is warmer
(D) The speed of the ship on the sea is greater.

Correct Answer: [B] Saltwater of the sea is denser.
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