Question

Which of the following is the major constituent of air?

• A. Oxygen
• B. Nitrogen
• C. Carbon dioxide
• D. None of these

Answer 1

The correct option is B

Nitrogen

An explanation for the correct option (B)

Option (B). Nitrogen

• Air is a mixture of gases. It consists of two main gases i.e. Oxygen and Nitrogen.
• 78% of air consists of Nitrogen.

The explanation for incorrect options

Option (A). Oxygen

• 21% of air consists of Oxygen.

Option (C). Carbon dioxide

• 0.03% of air consists of Carbon dioxide.

Final answer:- Option (B) is the correct answer as Nitrogen is the major constituent of air.