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प्रश्न
How is the heat energy supplied to a liquid used during boiling at a fixed temperature?
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उत्तर
During boiling the heat energy supplied is used in increasing the energy of water molecule and hence the change of phase takes place. On recieving sufficient amount of energy it get converted into the gaseous state.
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संबंधित प्रश्न
Evaporation is rapid on a wet day.
All molecules of a liquid take part in the process of evaporation.
Evaporation takes place at ................. .
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
The boiling point of a liquid is increased by
No heat is supplied to a liquid during evaporation. How does then the liquid change into its vapours?
Give reason for the increase in rate of evaporation of a liquid when air is blown above the liquid.
What is the change in average kinetic energy of molecules of a liquid during boiling at its boiling point?
