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

Question : 16

Two soap bubbles are held by a tube. What will happen ?

a) Air will not travel

b) Air will travel from bigger to smaller bubble

c) Air will travel through tube

d) Nothing can be said

Question : 17 [IAS (Pre) 1999]

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 : 18 [MPPCS (Pre) 1999]

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 : 19

Ideal liquid is that liquid

a) whose viscosity is zero

b) whose density is zero

c) which is compressible

d) None of these

Question : 20

A container partly filled in a liquid is suspended from a spring balance. A small body is gently dropped in the container. The pointer of spring balance will

a) oscillate

b) read less

c) read the same

d) read more