Advertisements
Advertisements
Question
Cooling is produced in ....................
Advertisements
Solution
Cooling is produced in evaporation.
APPEARS IN
RELATED QUESTIONS
All molecules of a liquid take part in boiling.
Boiling occurs at ....................
Match the column
| Column A | Column B |
| (a) Blowing air increases | (1) Increase in intermolecular separation |
| (b) Increase in pressure increases | (2) Pendulum of a clock |
| (c) Thermal expansion |
(3) Cooking utensils |
| (d) Invar | (4) Boiling point |
| (e) Pyrex glass | (5) Evaporation |
Do all the molecules of a liquid take part in evaporation? If not, explain your answer.
Why is cooling produced when a liquid evaporates?
Give reason for the increase in rate of evaporation of a liquid when surface area of liquid is increased.
What is boiling? Explain it on the basis of molecular motion?
What is the change in average kinetic energy of molecules of a liquid during boiling at its boiling point?
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.
