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
Why does a desert cooler cool better on a hot dry day?
How does water kept in an earthen pot (matka) become cool during summer?
A liquid can change into vapour state at all temperatures.
State three factors which affect the rate of evaporation of a liquid.
Why is cooling produced on evaporation of a liquid?
How can the evaporation of a liquid be made faster ?
Which of the following are also considered to be the states of matter ?
- Plasma
- Platelets
- BEC
- BHC
Give a geographical reason:
Air becomes saturated.
Comment on the following statements:
Evaporation produces cooling.
The rate of evaporation ______ with rising temperature.
