Question

The temperature at which a gas converts to a liquid is called

• A. melting point
• B. boiling point
• C. freezing point
• D. Condensation point

Answer 1

The correct option is D

Condensation point

The explanation for the correct option:

Condensation point:

1. Condensation is a process in which a gas changes into liquid on cooling.
2. On Cooling the gas, the gas molecules lose the kinetic energy and the inter-molecular forces of attraction between the molecules increase and they come close to each other and thus the gas turns into liquid.
3. Condensation is also known as liquefaction.
4. The condensation point of water is ${100}^{0}C$

The explanation for the incorrect options:

Option A:

1. Melting point is the temperature at which a solid turns into liquid.

Option B:

1. Boiling is a process of rapid conversion of a liquid into a gaseous state at a particular temperature.
2. The temperature at which boiling takes place is called the boiling point.

Option C:

1. Freezing point is the temperature at which a liquid turns into a solid.

Thus, Option (D) is correct.