Question

The percentage of nitrogen in the atmosphere is:

• A. 86%
• B. 78%
• C. 21%
• D. 1%

Answer 1

The correct option is B 78%

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.
  

So, the correct answer is option B.