set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

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 : 2

In solids, interatomic forces are

a) totally attractive

b) totally repulsive

c) combination of (a) and (b)

d) None of these

Question : 3

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 : 4

Surface tension of a liquid is due to

a) electrical force between molecules

b) gravitational force between molecules

c) adhesive force between molecules

d) cohesive force between molecules

Question : 5

Kerosene oil rises up in a wick of a lantern because of

a) surface tension

b) diffusion of the oil through the wick

c) buoyant force of air

d) the gravitational pull of the wick

Question : 6

The lift in an aeroplane is based on

a) Theorem of continuity

b) Law of gravitation

c) Pascal’s low

d) Bernoulli’s theorem