EDUCATION (CBSE/UGC NET)

Detailed explanation-1: -Nitrogen is the most abundant gas in the atmosphere, comprising about 78% of it. The composition of other gases in the atmosphere is: Oxygen-21% The remaining 1% is composed of argon, carbon dioxide, and few other gases.

Detailed explanation-2: -Nitrogen and Oxygen make up most of the part of our atmosphere. Nitrogen is about 78% and Oxygen is 21%.

Detailed explanation-3: -Due to the high value of mobility, nitrogen gas is less trapped in the soil of the earth as compared to oxygen which is required for breathing. Hence, though for respiration, oxygen is required but the higher proportion is of nitrogen which is around 78% of the total air composition.

Detailed explanation-4: -Atmosphere is a layer of gasses that surrounds the earth. It is made up of 78% nitrogen, 21% oxygen, 0.9% argon, and 0.03% carbon dioxide and a very small percentage of with water vapor.

Detailed explanation-5: -The other primary reason is that, unlike oxygen, nitrogen is very stable in the atmosphere and is not involved to a great extent in chemical reactions that occur there. Thus, over geological time, it has built up in the atmosphere to a much greater extent than oxygen.