Answers

2015-05-21T18:14:11+05:30
Acetone/petrol/perfume are highly volatile substance i.e. they vaporize at a lower temperature. These substance takes the required latent heat of vaporization from the palm as they vaporizes. Hence, our palms feel cold.

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2015-05-21T18:15:37+05:30
Our palm feels cold because when we apply acetone/perfume it vapourizes taking the latent heat from our hand. thus making us feel cold. This phenomenon is also known as cooling effect of evaporation
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