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प्रश्न
Comment on the following statements:
Evaporation produces cooling.
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उत्तर
Evaporation is a surface phenomenon. The particles from the surface of the liquid take energy from the surroundings and change into vapours which results in the decrease in energy of the surroundings. Hence, the cooling effect is produced during evaporation.
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संबंधित प्रश्न
A liquid can change into vapour state at all temperatures.
Wet clothes dry more quickly on a warm dry day than on a cold humid day. Explain.
Explain with an example to demonstrates that when a liquid evaporates, it takes heat from its surroundings.
Give two applications of evaporation.
Explain why in hot summer days water remains cool in earthen pots.
Why does all the water of the earth not get evaporated during hot summer days ?
The evaporation of water increases under the following conditions :
The amount of vapour in 1 cu.m. of air shows the ______.
Comment on the following statements:
Rate of evaporation of an aqueous solution decreases with increase in humidity.
The rate of evaporation is more when the surface area is greater.
