Question

Which of the following are the uses of oxygen?

• A. It helps in respiration.
• B. It is used as a fuel in rockets.
• C. The process of combustion is supported by oxygen.
• D. All of the above

Answer 1

The correct option is D

All of the above

Oxygen is slightly heavier than air.It is sparingly soluble in water.

The following are the uses of oxygen

i) Oxygen helps in respiration. Oxygen cylinders are used by underwater divers, mountaineers as an aid of respiration.

ii) Liquid oxygen mixed with kerosene is used as a fuel in rockets.

iii) The process of combustion is supported by oxygen.

iv) For welding and melting of metal, oxy-hydrogen flame and oxy-acetylene flame are used.