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

Question : 21 [PSC (Pre) 2018]

Increasing the amount of a substance does not change its

a) Weight

b) Mass

c) Volume

d) Density

Question : 22 [Uttarakhand Lower Sub. (Pre) 2010]

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

Question : 23

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 : 24

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 : 25 [UPPCS (Pre) 1992]

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