Question

The hydride used as refrigerant in ice plants is:

• A. $N{H}_3$
• B. $P{H}_3$
• C. $N{Cl}_3$
• D. $P{Cl}_3$

Answer 1

The correct option is A $N{H}_3$

Liquid $N{H}_3$ is used as refrigerant because it has a high latent heat of vaporisation (5700 cal/mol) and a low boiling point. evaporation of a liquid needs heat energy. when liquid ammonia vapourises. it absorbs large quantities of heat without changing its temperature. for these reasons, ammonia is widely used as a refrigerant.

Hence, the correct option is $\text{A}$