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%

The correct option is option B

The explanation for the correct option:

1. The atmosphere is a gaseous layer that surrounds the planet.
2. It is composed of 78% nitrogen, 21% oxygen, 0.9 % argon, 0.03% carbon dioxide, and a very little amount of water vapor.
3. It shields the earth from the sun's dangerous UV radiation.

Final answer: The percentage of nitrogen present in the atmosphere is 78%.