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

Question : 16

A man is sitting in a boat which is floating in pond. If the man drinks some water from the pond, the level of water in the pond will

a) fall a little

b) rise a little

c) remain stationary

d) None of these

Question : 17

In solids, interatomic forces are

a) totally attractive

b) totally repulsive

c) combination of (a) and (b)

d) None of these

Question : 18 [UPPCS (Pre) 2014]

Pressure inside a soap bubble is

a) Less than atmospheric pressure

b) Equal to atmospheric pressure

c) More than atmospheric pressure

d) Half of atmospheric pressure

Question : 19

Small droplets of a liquid are usually more spherical in shape than larger drops of the same liquid because

a) force of surface tension predominates the force of gravity

b) force of surface tension is equal and opposite to the force of gravity

c) force of gravity predominates the force of surface tension

d) force of gravity and force of surface tension act in the same direction and are equal

Question : 20

The action of a nib split at the top is explained by

a) diffusion of fluid

b) gravity flow

c) capillary action

d) osmosis of liquid