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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 takes place only from the surface of liquid.
All molecules of a liquid take part in boiling.
Boiling is a rapid phenomenon.
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
During boiling or vaporization
No heat is supplied to a liquid during evaporation. How does then the liquid change into its vapours?
Why is cooling produced when a liquid evaporates?
