Boiling does not occur when:
Liquid is very concentrated
Liquid is heated in a closed vessel
Liquid is not very dense
Liquid is heated in an open vessel
Boiling does not occur when liquid is heated in a closed vessel because liquid is not able to vapourise from the surface.
(1): It is observed that when a liquid is heated in a vessel its level does not change.
(2): coefficient of real of the liquid = coefficient of volume expansion of the vessel
Below the boiling point of a liquid evaporation takes place. Then when the liquid is being heated to vaporise it, before reaching its boiling point does the liquid not evaporate?
When a liquid in a vessel is heated its level