Question

Rapid conversion of water into steam is known as

• A. Boiling
• B. Melting
• C. Evaporation
• D. Sublimation

Answer 1

The correct option is A

Boiling

An explanation for the correct option:

Option A: Boiling

1. Boiling is defined as the process in which all the particles gain the same amount of heat energy when heated.
2. They will start moving faster after gaining energy and will start escaping from the liquid.
3. Surface particles will escape first and after that particles from the bulk of liquid will escape in the form of bubbles.
4. Therefore, when water is converted into steam, the liquid is said to be boiling.
5. Therefore, option A is correct.

An explanation for the incorrect options:

Option B: Melting

1. Melting is the process of conversion of a solid into a liquid.
2. So, option B is incorrect.

Option C: Evaporation

1. Evaporation is the conversion of liquid into gas.
2. But it is a slow process. It is not the rapid conversion of liquid into steam.
3. So, option C is incorrect.

Option D: Sublimation

1. Sublimation is the process of conversion of solid into gas directly.
2. So, option D is incorrect.

Therefore, option A is correct. Rapid conversion of water into steam is known as boiling.