Advertisements
Advertisements
प्रश्न
Why does evaporation cool a liquid ?
Advertisements
उत्तर
Evaporation cools the surroundings and the rest of the liquid because when a liquid evaporates, it takes up the latent heat of vaporisation from the surroundings and the rest of the liquid present below the surface with which, it is in contact.
APPEARS IN
संबंधित प्रश्न
Why are we able to sip hot tea or milk faster from a saucer than a cup?
What type of clothes should we wear in summer ? Why ?
Why does our palm feel cold when we put some acetone (or perfume) on it ?
Which of the following are also considered to be the states of matter ?
- Plasma
- Platelets
- BEC
- BHC
The ______ of air is dependent on the temperature of air.
The amount of vapour in 1 cu.m. of air shows the ______.
Give a geographical reason:
Air becomes saturated.
Can you suggest a method to collect water from sea water?
Comment on the following statements:
Rate of evaporation of an aqueous solution decreases with increase in humidity.
When lemon juice is mixed with soda water, they produce brisk effervescence.
