Advertisements
Advertisements
प्रश्न
Give reason for the increase in rate of evaporation of a liquid when surface area of liquid is increased.
Advertisements
उत्तर
SURFACE AREA INCREASES THE RATE OF EVAPORATION: On increasing the area of the surface, number of molecules escaping out from the surface increases.
APPEARS IN
संबंधित प्रश्न
Evaporation takes place only from the surface of liquid.
All molecules of a liquid take part in the process of evaporation.
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 |
During boiling or vaporization
The boiling point of a liquid is increased by
Comment on the statement ‘evaporation is a surface phenomenon’.
Give reason for the increase in rate of evaporation of a liquid when air is blown above the liquid.
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?
