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Question

What happens when a liquid becomes gas?


  1. The particles of liquid do not absorb heat energy and distance between them increases.

  2. The particles of liquid absorb heat energy and distance between them decreases.

  3. The particles of liquid absorb heat energy and distance between them increases.

  4. The particles of solid absorb all the heat energy and there occurs no change in the distance between them.


Solution

The correct option is C

The particles of liquid absorb heat energy and distance between them increases.


When a liquid changes to gas, the particles absorb heat energy and they start vibrating faster and distance between them increases. On constant vibration, intermolecular forces decrease and particles start moving away from each other and change to gas.

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