Advertisements
Advertisements
प्रश्न
During boiling or vaporization
पर्याय
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
Evaporation takes place only from the surface of liquid.
Evaporation takes place at ................. .
The molecules of liquid ............. heat from surroundings in evaporation.
Heat is ................... during 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.
Give reason for the increase in rate of evaporation of a liquid when surface area 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.
