physical properties of materials - Category wise Question and Answer Practice Test with Solutions

Question : 1

Hydraulic lift is based on the principle of

a) Bernoulli’s theorem

b) Pascal’s law

c) Toricelli’s theorem

d) Stoke’s law

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Question : 2 [UPRO/ARO (Mains) 2014]

200 gm of water is filled in a weightless balloon. Its weight in water will be

a) 100 gm

b) 200 gm

c) Zero

d) 400 gm

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Question : 3

For a fluid which is flowing steadily, the level in the vertical tubes is best represented by

a)

b)

c)

d)

Answer »

Question : 4

According to Hooke’s law of elasticity, if stress is increased, then the ratio of stress to strain

a) remains constant

b) becomes zero

c) decreases

d) increases

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Question : 5 [UPPCS (Pre) 1994]

Why does an iron nail float on mercury while it sinks in water?

a) Iron is heavier than water and lighter than mercury

b) Iron has greater density than water and lesser than mercury

c) Due to less chemical interaction of iron with mercury than it is with water

d) Mercury is heavier than water

Answer »