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प्रश्न
During summer days, water kept in an earthen pot (pitcher) becomes cool because of the phenomenon of :
विकल्प
diffusion
transpiration
osmosis
evaporation
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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
Water in a dish evaporates faster than in a bottle. Give reason.
If the back of your hand is moistened with alcohol, you will find that it rapidly becomes dry. Why is it that while it is drying, your hand feels cool ?
Why are we able to sip hot tea or milk faster from a saucer rather than from a cup ?
The evaporation of water increases under the following conditions :
The ______ of air is dependent on the temperature of air.
The amount of vapour in 1 cu.m. of air shows the ______.
How is humidity measured?
Give a geographical reason:
Air becomes saturated.
Evaporation is a fast process and occurs only at the surface of the liquid.
The process of evaporation is not a good technic to separate salt from seawater give a reason.
