question_answer

The difference between boiling and evaporation is that                     (UPTET Nov 2011)

A) boiling causes a change of state of water while evaporation does not

B) evaporation can take place at any temperature while boiling can not

C) boiling causes reduction in volume of liquid while evaporation does not

D) changing of boiling liquid into vapour can be seen but evaporation cannot be seen