Q.

Which of the following gas/es in the air have the highest percentage?


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a

Oxygen

b

Carbon dioxide

c

Noble gases

d

Nitrogen 

answer is D.

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Detailed Solution

Nitrogen is present in the air and has the highest percentage.
Air is a mixture of several gases. Air contains mainly nitrogen and oxygen. It also has carbon dioxide, noble gases, water vapour, dust particles and traces of other gases. Air contains about 78% nitrogen, 21% oxygen, and 1% of carbon dioxide, noble gases, water vapour, dust particles and traces of other gases. So, nitrogen in the air has the highest percentage.
 
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