Question

Match the following:

Set 1	Set 2
a)Deliquescent substance	(i)Washing soda
b)Efflorescent substance	(ii)Conc. sulphuric acid
c) Desiccants	(iii)Sodium hydroxide

• A. a)-(iii), b)-(i), c)-(ii)
• B. a)-(iii), b)-(ii), c)-(i)
• C. a)-(ii), b)-(iii), c)-(i)
• D. a)-(ii), b)-(i), c)-(iii)

Answer 1

The correct option is A a)-(iii), b)-(i), c)-(ii)

The substances when exposed to the atmosphere at ordinary temperature, absorb the moisture present in the air to become moist. Sodium hydroxide is an example of a deliquescent substance.

Conc. sulphuric acid is an example of desiccants. Compounds that remove water from the surrounding air are called desiccants.

Washing soda loses its water content when exposed to air and becomes powder. Hence it is an example of efflorescent substances.