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
Water in a dish evaporates faster than in a bottle. Give reason.
Explain why in hot summer days water remains cool in earthen pots.
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.
How does the water kept in an earthen pot (matka) become cold during summer ?
Why does our palm feel cold when we put some acetone (or perfume) on it ?
How can the evaporation of a liquid be made faster ?
Which of the following are also considered to be the states of matter ?
- Plasma
- Platelets
- BEC
- BHC
The ______ of air is dependent on the temperature of air.
Evaporation of water from lakes and river ______.
Look at Fig. 1.3 and suggest in which of the vessels A,B, C or D the rate of evaporation will be the highest? Explain.
