Question

State three uses of oxygen, other than artificial respiration.

Answer 1

Uses of oxygen are :

• Spaceships : Liquid oxygen is used for burning fuel in rockets and spaceships as there is no air in the space.
• Cutting and welding : Oxygen and hydrogen are made to bum in a specially designed torch. The oxy- hydrogen flame can easily melt metals and used for cutting and welding them.
• Chemical industry : Oxygen is used in large amount for preparing sulphuric acid from sulphur and nitric acid from ammonia.