1.

Why does the back of our hand feel cold when acetone gets evaporated??

Answer» As it take heat from our body to evaporate which makes us feel cool.
Because the smell of acetone has less energy then the outer surroundings so,to equal the energy it absorbs the energy from the outer surroundings and evaporats the acetone and then our palm gets cold
Acetone is highly sublimable. it converts into vapour at a fast rate. this increases the liquid molecules around it in vapour phase thus our palm feel cold.
Due to decrease in tenperature


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