Question

A substance is said to be a _____ if its boiling point is below room temperature under atmospheric pressure.

• A. solid
• B. liquid
• C. gas
• D. plasma

Answer 1

The correct option is C gas

A substance is said to be a solid if it's melting point is above room temperature under atmospheric pressure. A substance is said to be a liquid if it's melting point is below room temperature and boiling point is above room temperature. A substance is said to be a gas if its boiling point is below room temperature under atmospheric pressure.

Hence, the correct option is $\text{C}$