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प्रश्न
Comment on the following statements:
Rate of evaporation of an aqueous solution decreases with increase in humidity.
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उत्तर
The amount of water present in the air is known as humidity. If the water vapour in the air is already present in a large amounts, it is not able to take up more water through evaporation. Hence, the rate of evaporation of water will decrease. On a dry day, the air absorbs water more readily hence, the rate of evaporation is high on a dry day.
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संबंधित प्रश्न
How does water kept in an earthen pot (matka) become cool during summer?
Why are we able to sip hot tea or milk faster from a saucer than a cup?
Explain why in hot summer days water remains cool in earthen pots.
A patient suffering from high fever is advised to put wet clot strips on his forehead. Why?
Why does our palm feel cold when we put some acetone (or perfume) on it ?
During summer days, water kept in an earthen pot (pitcher) becomes cool because of the phenomenon of :
The ______ of air is dependent on the temperature of air.
Why is the air in a region dry?
Comment on the following statements:
Evaporation produces cooling.
Evaporation is a fast process and occurs only at the surface of the liquid.
