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 does our palm feel cold when we put some acetone or petrol or perfume on it?
Evaporation takes place from the
A liquid can change into vapour state at all temperatures.
Water in a dish evaporates faster than in a bottle. Give reason.
Why is cooling produced on evaporation of a liquid?
Why does our palm feel cold when we put some acetone (or perfume) on it ?
How can the evaporation of a liquid be made faster ?
The ______ of air is dependent on the temperature of air.
Give a geographical reason:
Air becomes saturated.
The rate of evaporation ______ with rising temperature.
