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प्रश्न
Boiling occurs at ....................
रिकाम्या जागा भरा
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उत्तर
Boiling occurs at a fixed temperature.
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Change of Liquid into Vapour State
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संबंधित प्रश्न
Evaporation is rapid on a wet day.
Evaporation takes place only from the surface of liquid.
All molecules of a liquid take part in the process of 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 |
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 boiling? Explain it on the basis of molecular motion?
Name two ways of change of liquid state to the vapour state and distinguish them.
