Question

A tight metal lid of a glass jar can be opened when dipped in warm water

Answer 1

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HERE`S YOUR ANSWER :-

A tight metal lid of a glass jar can be opened when dipped in warm water because when we dip the lid which is made of metal becomes soft and we are able to remove it quickly without much force.

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ADITYA VADAGERI

Answer 2

This is because of pressure difference outside the glass jar and inside the glass jar, this pressure difference makes the gasses inside the glass jar expand as air expands on heating, the warm water make the gases in the glass jar expand thus pushing the metal lid to open up in the warm water.