Give reasons for the following:
Dry ice is used for refrigeration of food.
Dry ice is the solid form of Carbon dioxide(CO2).
Dry ice is used for refrigeration of food because:
Give reasons for the following :
(a) An excess of carbon dioxide increases the temperature of the earth.
(b) Soda acid and foam type of fire extinguishers are not used for extinguishing electrical fires.
(c) Solid carbon dioxide is used for the refrigeration of food.
(a) Liquid ammonia is used as a refrigerant in ice plants.
(b) Aqueous solution of ammonia is used for removing grease stains from woollen clothes.
(c) Aqueous solution of ammonia gives a pungent smell.
(d) Aqueous solution of ammonia conducts electricity.
Give reason for the following:
An ice cube is used for cooling a drink.
Give reasons for the following statement:
Dry ice is used in the refrigeration of food items.