Uses of Liquefied Gases
Liquefied and gases compressed under a high pressure are of great importance in industries.
(i) Liquid ammonia and liquid sulphur dioxide are used as refrigerants.
(ii) Liquid carbon dioxide finds use in soda fountains.
(iii) Liquid chlorine is used for bleaching and disinfectant purposes.
(iv) Liquid air is an important source of oxygen in rockets and jet-propelled planes and bombs.
(v) Compressed oxygen is used for welding purposes.
(vi) Compressed helium is used in airships.