Advertisements
Advertisements
Question
Why is cooling produced when a liquid evaporates?
Solution
For changing liquid into vapours heat is needed this heat is taken from the container or surroundings and temperature of container or body itself fall and cooling is produced.
APPEARS IN
RELATED QUESTIONS
Evaporation takes place only from the surface of liquid.
Temperature of a liquid rises during boiling or vaporization
The molecules of liquid ............. heat from surroundings in evaporation.
Heat is ................... during boiling.
The rate of evaporation of a liquid increases when:
The boiling point of a liquid is increased by
Give reason for the increase in rate of evaporation of a liquid when air is blown above the liquid.
Give reason for the increase in the rate of evaporation of a liquid when temperature of liquid is increased.
How is the heat energy supplied to a liquid used during boiling at a fixed temperature?
Name two ways of change of liquid state to the vapour state and distinguish them.
