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प्रश्न
During boiling or vaporization
विकल्प
all molecules take part
temperature rises
no heat is absorbed
the average kinetic energy of molecules increases.
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उत्तर
all molecules take part
APPEARS IN
संबंधित प्रश्न
Evaporation takes place only from the surface of liquid.
All molecules of a liquid take part in the process of evaporation.
Boiling occurs at ....................
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 |
No heat is supplied to a liquid during evaporation. How does then the liquid change into its vapours?
What is boiling? Explain it on the basis of molecular motion?
What is the change in average kinetic energy of molecules of a liquid during boiling at its boiling point?
