Advertisements
Advertisements
प्रश्न
Boiling occurs at ....................
उत्तर
Boiling occurs at a fixed temperature.
APPEARS IN
संबंधित प्रश्न
Evaporation is rapid on a wet day.
Evaporation takes place only from the surface of liquid.
Temperature of a liquid rises during boiling or vaporization
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
Do all the molecules of a liquid take part in evaporation? If not, explain your answer.
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.
What is the change in average kinetic energy of molecules of a liquid during boiling at its boiling point?
Name two ways of change of liquid state to the vapour state and distinguish them.
