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प्रश्न
Do all the molecules of a liquid take part in evaporation? If not, explain your answer.
उत्तर
No, all the molecules of the liquid do not take part in evaporation only those molecules near the surface of the liquid which acquire sufficient Kinetic energy (Threshold velocity) escape as they overcome attractive forces of other molecules. Then other molecules come to the surface of the liquid and acquire more K.E. and escape the surface. This continues till all the liquid evaporates.
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संबंधित प्रश्न
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Cooling is produced in ....................
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Give reason for the increase in rate of evaporation of a liquid when surface area of liquid is increased.
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