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प्रश्न
Cooling is produced in ....................
रिक्त स्थान भरें
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उत्तर
Cooling is produced in evaporation.
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Change of Liquid into Vapour State
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संबंधित प्रश्न
Evaporation is rapid on a wet day.
Evaporation takes place only from the surface of liquid.
Boiling is a rapid phenomenon.
Boiling occurs at ....................
Evaporation takes place at ................. .
Match the column
| Column A | Column B |
| (a) Blowing air increases | (1) Increase in intermolecular separation |
| (b) Increase in pressure increases | (2) Pendulum of a clock |
| (c) Thermal expansion |
(3) Cooking utensils |
| (d) Invar | (4) Boiling point |
| (e) Pyrex glass | (5) Evaporation |
In evaporation
No heat is supplied to a liquid during evaporation. How does then the liquid change into its vapours?
Comment on the statement ‘evaporation is a surface phenomenon’.
Name two ways of change of liquid state to the vapour state and distinguish them.
