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Composition of Air

Which of the ...

Question

Which of the following constituent gas is not directly used by the living beings?

A

Oxygen

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B

Nitogen

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C

Hydrogen

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D

Carbon dioxide

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Solution

The correct option is B Nitogen
Nitrogen gas cannot be used by the human beings directly, breathing pure nitrogen means we're not breathing oxygen, which means that we'll die of oxygen deprivation in a matter of minutes
Hence option B is correct.

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