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प्रश्न
How does the water kept in an earthen pot (matka) become cold during summer ?
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उत्तर
An earthen pot has a large number of extremely small pores on its wall. Some of the water, continuously keeps seeping through these pores. This water evaporates continuously and absorbs its latent heat, required for vaporization from the earthen pot and the remaining water in the pot. In this way, the remaining water loses heat and gets cooled.
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संबंधित प्रश्न
How does water kept in an earthen pot (matka) become cool during summer?
Explain with an example to demonstrates that when a liquid evaporates, it takes heat from its surroundings.
Give two applications of evaporation.
Would you cool a bucket of water more quickly by placing it on ice or by placing ice in it? Give reasons for your answer.
Why are we able to sip hot tea or milk faster from a saucer rather than from a cup ?
How will you demonstrate that water vapour is present in air ?
Why does evaporation cool a liquid ?
Which of the following are also considered to be the states of matter ?
- Plasma
- Platelets
- BEC
- BHC
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.
