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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
APPEARS IN
संबंधित प्रश्न
All molecules of a liquid take part in the process of evaporation.
Temperature of a liquid rises during boiling or vaporization
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:
During boiling or vaporization
Do all the molecules of a liquid take part in evaporation? If not, explain your answer.
Comment on the statement ‘evaporation is a surface phenomenon’.
Give reason for the increase in the rate of evaporation of a liquid when temperature of liquid is increased.
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?
