95b33cee__Our_Surroundings__Short_Q___A__Boiling
[No.] 2 [Evaporation] In general liquid absorbs heat energy from its surroundings. [Boiling] 
It requires heat energy to be supplied by external sources.
CBSE Papers, Questions, Answers, MCQ ...: CBSE-Class 9 - Science - Ch1- Matter In Our Surroundings- Short Q & A
Boiling