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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
A liquid can change into vapour state at all temperatures.
Wet clothes dry more quickly on a warm dry day than on a cold humid day. Explain.
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.
How does the water kept in an earthen pot (matka) become cold during summer ?
What is evaporation ? State the various factors which affect evaporation.
Which of the following are also considered to be the states of matter ?
- Plasma
- Platelets
- BEC
- BHC
How is humidity measured?
Look at Fig. 1.3 and suggest in which of the vessels A,B, C or D the rate of evaporation will be the highest? Explain.
