Advertisements
Advertisements
प्रश्न
During boiling or vaporization
विकल्प
all molecules take part
temperature rises
no heat is absorbed
the average kinetic energy of molecules increases.
Advertisements
उत्तर
all molecules take part
APPEARS IN
संबंधित प्रश्न
All molecules of a liquid take part in the process of evaporation.
Evaporation takes place at ................. .
The molecules of liquid ............. heat from surroundings in evaporation.
Cooling is produced in ....................
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 |
The rate of evaporation of a liquid increases when:
The boiling point of a liquid is increased by
Why is cooling produced when a liquid evaporates?
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.
