set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

For which one of the following capillarity is not the only reason?

a) Rising of underground water

b) Spread of water drop on a cotton cloth

c) Blotting of ink

d) Rising of water from the roots of a plant to its foliage

Question : 2

A body floats at 4ºC water. If temperature reaches 100ºC, then

a) No change

b) More part of the body will submerge

c) The body will sink

d) The body will float freely

Question : 3

Ideal liquid is that liquid

a) whose viscosity is zero

b) whose density is zero

c) which is compressible

d) None of these

Question : 4

Construction of submarines is based on

a) Bernoulli's theorem

b) Archimede's principle

c) Pascal's law

d) Newton's laws

Question : 5

The clouds float in the atmosphere because of their low

a) Velocity

b) Pressure

c) Temperature

d) Density

Question : 6

The lift of an air plane is based on

a) bernoulli’s theorem

b) Torricelli’s theorem

c) law of gravitation

d) conservation of linear momentum