Question

If a drop of sweat evaporates from body the work done is

Answer 1

The work done is evaporation.

Answer 2

Sweat helps cool you down by releasing moisture onto your skin. But that's not all that's going on. On a hot day, yoursweat evaporates from your skin taking a little bit of your body heat with it. ... So your sweat won't evaporate very much because the humid air can't hold very many more water molecules.