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Physics

Name two ways of changing liquid state to the vapour state and distinguish them.

Heat Energy

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Answer

The two ways to change liquid state to vapour state are:

  1. Boiling
  2. Evaporation

Differences between Boiling and Evaporation are listed below:

BoilingEvaporation
Boiling takes place at fixed temperature.Evaporation takes place at all temperatures.
Boiling is a rapid process.Evaporation is a slow process.
Boiling takes place throughout the mass of the liquid at the same instant.Evaporation takes place only from the surface of the liquid.
In boiling, external heat is supplied.In evaporation, liquid molecules absorb heat from its surroundings to convert into vapour state.

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