95b33cee__Our_Surroundings__Short_Q___A__Boiling
[No.] 3 [Evaporation] It is a surface phenomenon and occurs only at the surface of the liquid. [Boiling] 
It takes place throughout the liquid.
CBSE Papers, Questions, Answers, MCQ ...: CBSE-Class 9 - Science - Ch1- Matter In Our Surroundings- Short Q & A
Boiling