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प्रश्न
Explain with an example to demonstrates that when a liquid evaporates, it takes heat from its surroundings.
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उत्तर
If some spirit is poured on cotton wrapped around the bulb of a thermometer, the reading of the thermometer falls. This shows that cooling is produced when a liquid evaporates taking heat from surroundings.
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संबंधित प्रश्न
How does water kept in an earthen pot (matka) become cool during summer?
Evaporation takes place from the
Why is cooling produced on evaporation of a liquid?
Give two applications of evaporation.
Would you cool a bucket of water more quickly by placing it on ice or by placing ice in it? Give reasons for your answer.
During summer days, water kept in an earthen pot (pitcher) becomes cool because of the phenomenon of :
Evaporation of water from lakes and river ______.
Comment on the following statements:
Rate of evaporation of an aqueous solution decreases with increase in humidity.
The rate of evaporation ______ with rising temperature.
The process of evaporation is not a good technic to separate salt from seawater give a reason.
