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Question

The percentage of nitrogen in air is

A
21%
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B
0.1%
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C
54%
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D
78%
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Solution

The correct option is D 78%
The percentage of nitrogen in the air is 78%. Oxygen occupies 21% and argon occupies 0.9%. Gases like carbon dioxide, nitrous oxides, methane, and ozone are trace gases that account for about a tenth of one percent of the atmosphere.

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