Question

why does our Palm feel cold when we put some Acetone or petrol or perfume on it give me answer

Answer 1

as it's entropy is high so it actually vaporises in air as surface area incr..
hope it helps
#sweet16
suchitra
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Answer 2

when we put perfume on our palm, it absorbs the heat present in our palm and vaporizes with that heat. this phenomenon is known as latent heat of vapourization and it is becaude of this phenomenon that our palm feel cold.
hope this helped you
thanks...