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प्रश्न
Give two applications of evaporation.
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उत्तर
Two applications of evaporation:
- When we sprinkle water on the roads in the summer evening, water evaporates by taking heat from the road and produces coolness in the surroundings and it becomes pleasant.
- After taking a bath in summer when we come out of the water, water evaporates taking heat from our body. The temperature of body falls and we feel refreshed.
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संबंधित प्रश्न
State three factors which affect the rate of evaporation of a liquid.
Water in a dish evaporates faster than in a bottle. Give reason.
Why is cooling produced on evaporation of a liquid?
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 ?
Why are we able to sip hot tea or milk faster from a saucer rather than from a cup ?
During summer days, water kept in an earthen pot (pitcher) becomes cool because of the phenomenon of :
Comment on the following statements:
Evaporation produces cooling.
Comment on the following statements:
Rate of evaporation of an aqueous solution decreases with increase in humidity.
Evaporation is a fast process and occurs only at the surface of the liquid.
