When the vapour pressure of a liquid is equal to its atmospheric pressure, then it
Freezes
cools down
Boils
Does not undergo any change
When the vapour pressure of a liquid is equal to its atmospheric pressure, then it boils.
The water boils when :
1.Saturated vapour pressure of water becomes equal to atmospheric pressure
2. Boiling point of water becomes more than atmospheric pressure
3. Saturated vapour pressure of water is less than atmospheric pressure
4. Vapour pressure of water becomes more than atmospheric pressure