Question

The component air which comprises more than the $\frac{3}{4}th$ composition of air is

• A. Oxygen
• B. Carbon-dioxide
• C. Argon
• D. Nitrogen

Answer 1

The correct option is D

Nitrogen

Air is a mixture of different types of gases. Oxygen makes up about 21% of air by volume. It is essential for the survival of human beings. Nitrogen is the most abundant gas present in atmosphere constituting 78% of air. Carbon-dioxide is present in 0.03% of air. Argon is present in 0.95% of air. $\frac{3}{4}th$ composition of air means more than 75% of air. Therefore, the component air which comprises more than the $\frac{3}{4}th$ composition of air is nitrogen.