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प्रश्न
Why are we able to sip hot tea or milk faster from a saucer rather than from a cup ?
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उत्तर
We are able to sip hot tea or milk faster from a saucer rather than from a cup because saucer has a larger surface area due to which evaporation occurs faster. The vapours take up the latent heat from hot milk or tea kept in the saucer faster, than in a cup which has a smaller surface area than the saucer and make the contents of the saucer cool down faster.
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संबंधित प्रश्न
How does water kept in an earthen pot (matka) become cool during summer?
Why does our palm feel cold when we put some acetone or petrol or perfume on it?
Give two applications of evaporation.
Define the following term Freezing.
Why does our palm feel cold when we put some acetone (or perfume) on it ?
The evaporation of water increases under the following conditions :
Evaporation of water from lakes and river ______.
Comment on the following statements:
Evaporation produces cooling.
Evaporation is a fast process and occurs only at the surface of the liquid.
When lemon juice is mixed with soda water, they produce brisk effervescence.
