Question

what is defference between boiling point and evaporation

Answer 1

Boiling is a bulk phenomenon which occur only at boiling point while evaporation is a surface phenomenon which occur at any temprature

In boiling NO physical state is changed in evaporation state changes from liquid to vapour.

Answer 2

The difference between evaporation and boiling is that evaporation occurs on the surface of a liquid when a liquid changes to gas. 
Boiling is when all of the particles inside a liquid are heated up enough that they move around throughout the entire liquid.
The boiling point for each substance is different.

thanks