What is air? Name the major constituents of air. Also give their volume proportions in air.

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Solution

Air is a mixture of gases. The major constituents of air are nitrogen, oxygen, carbon dioxide and argon. The percentage composition of constituents of air are as given below:
Name of Constituents % Composition
Nitrogen gas $78.1$ %
Oxygen gas $20.9$ %
Carbon dioxide gas $0.03$ %
Argon $0.9$ %
Other components of air are water vapour and dust particles.

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