Question

The percentage of nitrogen present in the atmosphere is

• A. 86%.
• B. 78%.
• C. 20%.
• D. 50%.

Answer 1

The correct option is B 78%.

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. It protects the earth from the harmful UV rays of the sun. Thus the correct answer is option B.