Question

The boiling point of a substance is 165 K at atmospheric pressure. At room temperature the state of the substance is ________.

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

Answer 1

The correct option is C- Gas
The substance described in question is xenon and its state at room temperature is gas.

A substance is said to be a solid if its melting point is above room temperature under atmospheric pressure.

A substance is said to be a liquid if its 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.

Boiling point of a substance is defined as the temperature at which the substance transitions from liquid to gaseous phase.