set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Consider the following statement. If there were no phenomenon of capillarity.

1. It would be difficult to use a kerosene lamp then.
2. One would not be able to use a straw to consume a soft drink.
3. The blotting paper would fail to function.
4. The big trees that we see around would not have grown on the Earth.

a) Only 1, 3 and 4

b) Only 2 and 4

c) Only 1, 2 and 3

d) Only 1, 2, 3 and 4

Question : 2

Pressure at a point inside a liquid does not depend on

a) the nature of the liquid

b) the depth of the point below the surface of the liquid

c) the acceleration due to gravity at that point

d) the shape of the containing vessel

Question : 3

A drop of oil is placed on the surface of water. Which of the following statements is correct?

a) It will spread as a thin layer

b) It will remain on it as a sphere

c) It will partly be a spherical droplet and partly a thin film

d) It will float as a distorted drop on the water surface

Question : 4

Which of the following materials is most elastic ?

a) Lead

b) Rubber

c) Wood

d) Steel

Question : 5

With the rise of temperature, the viscosity of liquid

a) Decreases

b) Remains unchanged

c) Increases

d) May increase or decrease depending on nature of liquid

Question : 6

While travelling by plane, the ink of the pen starts to come out

a) Due to increase in air pressure

b) Due to increase in volume of ink

c) Due to decrease in air pressure

d) Due to excessive load