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प्रश्न
Give reason for the increase in rate of evaporation of a liquid when surface area of liquid is increased.
थोडक्यात उत्तर
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उत्तर
SURFACE AREA INCREASES THE RATE OF EVAPORATION: On increasing the area of the surface, number of molecules escaping out from the surface increases.
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Change of Liquid into Vapour State
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संबंधित प्रश्न
Evaporation is rapid on a wet day.
All molecules of a liquid take part in boiling.
Boiling is a rapid phenomenon.
Boiling occurs 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 |
During boiling or vaporization
Comment on the statement ‘evaporation is a surface phenomenon’.
What is boiling? Explain it on the basis of molecular motion?
How is the heat energy supplied to a liquid used during boiling at a fixed temperature?
