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प्रश्न
In evaporation
पर्याय
all molecules of liquid begin to escape out
only the molecules at the surface escape out
the temperature of liquid rises by absorbing heat from surroundings.
the molecules get attracted within the liquid.
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उत्तर
only the molecules at the surface escape out
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संबंधित प्रश्न
All molecules of a liquid take part in the process of evaporation.
All molecules of a liquid take part in boiling.
Boiling is a rapid phenomenon.
Evaporation takes place at ................. .
The molecules of liquid ............. heat from surroundings in evaporation.
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 |
The rate of evaporation of a liquid increases when:
Give reason for the increase in rate of evaporation of a liquid when air is blown above the liquid.
What is the change in average kinetic energy of molecules of a liquid during boiling at its boiling point?
How is the heat energy supplied to a liquid used during boiling at a fixed temperature?
