GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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About how much of earth’s atmosphere is Nitrogen?
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78%
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20%
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10%
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85%
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Explanation:
Detailed explanation-1: -As of 2023, by mole fraction (i.e., by number of molecules), dry air contains 78.08% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmosphere.
Detailed explanation-2: -Air contains 79% N2 and 21% O2 by volume.
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