Advertisements
Advertisements
प्रश्न
Why is cooling produced on evaporation of a liquid?
Advertisements
उत्तर
The evaporation of a liquid requires heat. This heat is taken from the surroundings like the body, palm, forehead, or finger and its temperature falls and we feel cool.
APPEARS IN
संबंधित प्रश्न
How does water kept in an earthen pot (matka) become cool during summer?
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.
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.
Define the following terms Condensation
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 ?
What is evaporation ? State the various factors which affect evaporation.
The evaporation of water increases under the following conditions :
The amount of vapour in 1 cu.m. of air shows the ______.
The rate of evaporation ______ with rising temperature.
