set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

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 : 2

Which of the following materials is most elastic ?

a) Lead

b) Rubber

c) Wood

d) Steel

Question : 3

While floating in a sea what part of an iceberg is above the surface of the sea?

a) 1/10

b) 1/6

c) 1/9

d) 1/4

Question : 4

A tank filled with water has a hole at a certain height from its bottom. The volume of water emerging out per second from the hole does not depend on

a) the area of a hole.

b) the height of the level of liquid above the hole.

c) the density of a liquid.

d) the acceleration due to gravity.

Question : 5

A water tank of height 10 m, completely filled with water is placed on a level ground. It has two holes one at 3 m and the other at 7 m from its base. The water ejecting from

a) upper hole will fall farther than that from the lower hole

b) both the holes will fall at the same spot

c) upper hole will fall closer than that from the lower hole

d) more information is required

Question : 6

Kerosene oil floats on water because

a) Its density is less than the density of water

b) Its density is equal to that of the density of water

c) Its density is greater than the density of water

d) None of the above