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प्रश्न
The evaporation of water increases under the following conditions :
विकल्प
increase in temperature, decrease in surface area
increase in surface area, decrease in temperature
increase in surface area, rise in temperature
increase in temperature, increase in surface area, addition of common salt
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उत्तर
increase in surface area, rise in temperature
When surface area increases and temperature rises, evaporation of water increases because the area which is exposed to the outer atmosphere is more and increasing the temperature leads to increase in the kinetic energy, due to which rate of evaporation increases.
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संबंधित प्रश्न
Why are volatile liquids such as alcohol and spirit stored in tightly closed bottles?
Explain with an example to demonstrates that when a liquid evaporates, it takes heat from its surroundings.
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.
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 does our palm feel cold when we put some acetone (or perfume) on it ?
How will you demonstrate that water vapour is present in air ?
During summer days, water kept in an earthen pot (pitcher) becomes cool because of the phenomenon of :
The rate of evaporation is more when the surface area is greater.
When lemon juice is mixed with soda water, they produce brisk effervescence.
The process of evaporation is not a good technic to separate salt from seawater give a reason.
