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

Question : 41

With the increase of temperature, the surface tension of the liquid

a) remains the same

b) may increase or decrease depending on the density of liquid

c) always increases

d) always decreases

Question : 42 [RAS/RTS (Pre) 1997]

Kerosene rises in the wick of the stove is due to

a) Diffusion

b) Surface tension

c) Osmosis

d) Biogen contraction

Question : 43

Why the dam of water reservoir is thick at the bottom?

a) Density of water increases with depth

b) Quantity of water increases with depth

c) Pressure of water increases with depth

d) Temperature of water increases with depth

Question : 44

Liquid pressure at a point in a liquid does not depend on the

a) shape of the vessel in which the liquid is kept

b) density of liquid

c) depth of the point from the surface

d) acceleration due to gravity

Question : 45

A liquid rises in a capillary tube higher than water does. The difference may be due to the fact that

a) temperature of liquid is higher than that of water

b) diameter of the capillary may be different in the two cases

c) surface tension of water is less than that of the liquid

d) both (a) and (c)