MCQ- 7 ICSE Physics class 10 ch-5 Heat

Boiling, Evaporation, Condensation, Melting & Freezing - Class 10 Physics

1. What is the process of changing a liquid to a gas at its boiling point called?

Melting
Boiling
Freezing
Condensation

Correct Answer: Boiling

2. What happens when water vapour cools and turns into liquid?

Freezing
Condensation
Melting
Sublimation

Correct Answer: Condensation

3. Which of the following factors increases the rate of evaporation?

Low temperature
High humidity
Increased surface area
Low wind speed

Correct Answer: Increased surface area

4. What is the temperature at which a solid turns into a liquid?

Melting point
Boiling point
Freezing point
Condensation point

Correct Answer: Melting point

5. What process is the reverse of melting?

Boiling
Evaporation
Freezing
Sublimation

Correct Answer: Freezing