Advertisements
Advertisements
Question
The rate of evaporation of a liquid increases when:
Options
temperature of liquid falls
liquid is poured in a vessel of less surface area
air is blown above the surface of liquid
humidity increases
Advertisements
Solution
air is blown above the surface of liquid
APPEARS IN
RELATED QUESTIONS
All molecules of a liquid take part in boiling.
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 |
In evaporation
Do all the molecules of a liquid take part in evaporation? If not, explain your answer.
No heat is supplied to a liquid during evaporation. How does then the liquid change into its vapours?
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 rate of evaporation of a liquid when surface area of liquid is increased.
Give reason for the increase in the rate of evaporation of a liquid when temperature of liquid is increased.
What is boiling? Explain it on the basis of molecular motion?
How is the heat energy supplied to a liquid used during boiling at a fixed temperature?
