The correct ascending
order of gases as per their composition in air is:
A
oxygen < carbon dioxide < nitrogen
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B
hydrogen < oxygen < nitrogen
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C
nitrogen < hydrogen < oxygen
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D
oxygen < carbon dioxide < hydrogen
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Solution
The correct option is B hydrogen < oxygen < nitrogen By volume dry air contains 78.09% Nitrogen, 20.95% Oxygen, 0.93% Argon, 0.04% Carbon dioxide and small traces of other gases.
Ascending order of gases as per their composition in air is-