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Question

Write briefly about the composition of air.

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Solution

Air is a mixture of various gases. The main gases present in air are nitrogen (78.03%) and oxygen (20.99%). Small amounts of other gases, such as carbon dioxide (0.03%) , helium and argon, water vapour, dust particles and certain other impurities are also present in air. The composition of air varies from place to place and from season to season.

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