GK
INDIAN GEOGRAPHY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Oxygen
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Argon
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Carbon-Dioxide
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Nitrogen
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Detailed explanation-1: -Among all the gases present in atmosphere, nitrogen constitutes highest amount. Percentage of nitrogen present in atmosphere is 78.
Detailed explanation-2: -Of the dry composition of the atmosphere, nitrogen by far is the most common. Nitrogen dilutes oxygen and prevents rapid burning at the Earth’s surface. Living things need it to make proteins. Oxygen is used by all living things and is essential for respiration.
Detailed explanation-3: -Nitrogen is more in the air because it is least reactive and nitrogen is generated and maintained in this natural equilibrium by plants and surface soil bacteria, who convert it to ammonium, nitrites, and nitrates before releasing it as free nitrogen back into the atmosphere.