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प्रश्न
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.
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उत्तर
We can cool a bucket of water quicker when we keep ice inside the bucket because ice cubes absorb more and more heat from the liquid system in which it is present, cooling the liquid system quickly. But when we put water in ice, the ice comes in contact with the bucket and absorbs the latent heat from both the water and bucket. Therefore, the effectiveness of cooling is reduced.
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संबंधित प्रश्न
How does water kept in an earthen pot (matka) become cool during summer?
What produces more severe burns, boiling water or steam?
State three factors which affect the rate of evaporation of a liquid.
Give two applications of evaporation.
Define the following term Freezing.
Why does all the water of the earth not get evaporated during hot summer days ?
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
Give a geographical reason:
Air becomes saturated.
How does the water kept in an earthen pot remain cool?
