Question

what kind of change of state take place on boiling a liquid?

Answer 1

evaporation starts so water changes into gas(water vapour)

Answer 2

On boiling a liquid, The liquid form changes to its gaseous phase.This process is called as evaporation.

This is an example of PHYSICAL CHANGE.

Here the change in state is from LIQUID to GASEOUS 


NOTE:
Any change in state,colour,smell which is a reversible reaction, indicates a physical change.