Question

why does our palm feel cold when we put some acetone or perfume on it

Answer 1

$\huge\Black {Answer}$

this increases the liquid molecules around it in vapour phase thus our palm feel cold. acetone,petrol orperfume has very low boiling temperature. when we put some acetone on our palm the particles of it gain energy from our palm and evaporate quickly which causes cooling .

Answer 2

Because acetone or petrol or perfume looses their temperature and gain energy by using from surrounding air.