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प्रश्न
In evaporation
पर्याय
all molecules of liquid begin to escape out
only the molecules at the surface escape out
the temperature of liquid rises by absorbing heat from surroundings.
the molecules get attracted within the liquid.
उत्तर
only the molecules at the surface escape out
APPEARS IN
संबंधित प्रश्न
Temperature of a liquid rises during boiling or vaporization
Evaporation takes place at ................. .
The molecules of liquid ............. heat from surroundings in evaporation.
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 |
The rate of evaporation of a liquid increases when:
During boiling or vaporization
No heat is supplied to a liquid during evaporation. How does then the liquid change into its vapours?
Comment on the statement ‘evaporation is a surface phenomenon’.
What is boiling? Explain it on the basis of molecular motion?
