Advertisements
Advertisements
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.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Why are we able to sip hot tea or milk faster from a saucer than a cup?
What type of clothes should we wear in summer?
Explain with an example to demonstrates that when a liquid evaporates, it takes heat from its surroundings.
Why does all the water of the earth not get evaporated during hot summer days ?
How does the water kept in an earthen pot (matka) become cold during summer ?
What is evaporation ? State the various factors which affect evaporation.
The evaporation of water increases under the following conditions :
Why is the air in a region dry?
Evaporation of water from lakes and river ______.
Comment on the following statements:
Rate of evaporation of an aqueous solution decreases with increase in humidity.
