Advertisements
Advertisements
Question
Comment on the following statements:
Evaporation produces cooling.
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
Why does our palm feel cold when we put some acetone or petrol or perfume on it?
What produces more severe burns, boiling water or steam?
A liquid can change into vapour state at all temperatures.
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.
Why does all the water of the earth not get evaporated during hot summer days ?
How does the water kept in an earthen pot (matka) become cold during summer ?
What type of clothes should we wear in summer ? Why ?
During summer days, water kept in an earthen pot (pitcher) becomes cool because of the phenomenon of :
Why is the air in a region dry?
Can you suggest a method to collect water from sea water?
