Q.

What is the gas in the atmosphere that is most abundant?

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a

N2

b

Other gases

c

CO2

d

 O2

answer is B.

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Detailed Solution

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Nitrogen (N2) is the most abundant naturally occurring gas and constitutes 78% of the atmospheric air. 

The abundance of gases in the atmosphere in decreasing order is as follows: nitrogen, oxygen, argon, water vapour, carbon dioxide, etc. 

Hence, the correct option is nitrogen. 

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