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
What produces more severe burns, boiling water or steam?
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.
Why is heat energy needed to melt a solid ? What is this heat energy called ?
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.
Which produces more severe burns : boiling water or steam ? Why ?
Define the following terms Condensation
Define the following term Freezing.
How is humidity measured?
Comment on the following statements:
Evaporation produces cooling.
