Advertisements
Advertisements
प्रश्न
Explain with an example to demonstrates that when a liquid evaporates, it takes heat from its surroundings.
Advertisements
उत्तर
If some spirit is poured on cotton wrapped around the bulb of a thermometer, the reading of the thermometer falls. This shows that cooling is produced when a liquid evaporates taking heat from surroundings.
APPEARS IN
संबंधित प्रश्न
Evaporation takes place from the
State three factors which affect the rate of evaporation of a liquid.
Wet clothes dry more quickly on a warm dry day than on a cold humid day. Explain.
Give two applications of evaporation.
A patient suffering from high fever is advised to put wet clot strips on his forehead. Why?
Define the following term Freezing.
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 ?
How can the evaporation of a liquid be made faster ?
Give a geographical reason:
Air becomes saturated.
Evaporation of water from lakes and river ______.
