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प्रश्न
During summer days, water kept in an earthen pot (pitcher) becomes cool because of the phenomenon of :
पर्याय
diffusion
transpiration
osmosis
evaporation
उत्तर
evaporation
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 takes the latent heat required for vaporization from the earthen pot and the remaining water. In this way, the remaining water loses heat and gets cooled.
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संबंधित प्रश्न
Why does a desert cooler cool better on a hot dry day?
A liquid can change into vapour state at all temperatures.
Water in a dish evaporates faster than in a bottle. Give reason.
Why are volatile liquids such as alcohol and spirit stored in tightly closed bottles?
Define the following terms Condensation
How does the water kept in an earthen pot (matka) become cold during summer ?
Why does evaporation cool a liquid ?
How does the water kept in an earthen pot remain cool?
Comment on the following statements:
Rate of evaporation of an aqueous solution decreases with increase in humidity.
Evaporation is a fast process and occurs only at the surface of the liquid.
