Advertisements
Advertisements
प्रश्न
Evaporation is rapid on a wet day.
पर्याय
True
False
Advertisements
उत्तर
False.
APPEARS IN
संबंधित प्रश्न
The molecules of liquid ............. heat from surroundings in evaporation.
Heat is ................... during boiling.
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 |
Do all the molecules of a liquid take part in evaporation? If not, explain your answer.
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.
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.
