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Byju's Answer
Standard V
Science
Air and Atmosphere
The main cons...
Question

The main constituent of air is .

A
Nitrogen
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B
Oxygen
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C
Helium
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D
Hydrogen
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Solution

The correct option is A Nitrogen
By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases.

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