3. Give reasons for the following: (a) Liquid ammonia is used as a refrigerant in ice plants.6

3. Give reasons for the following: (a) Liquid ammonia is used as a r

1.	3. Give reasons for the following: (a) Liquid ammonia is used as a refrigerant in ice plants.6
Answer» When liquid ammonia VAPORIZES it absorbs HEAT from the SURROUNDING. It is highly volatile. It easily liquifies under a pressure at room temperature. Hence liquid ammonia is used as a refrigerant in ice plants.Evaporation of a liquid NEEDS heat energy. When liquid ammonia vaporizes, it absorbs large quantities of heat without changing its temperature.