Question

When the lid of a bottle is closed tightly, you put it in warm water​

Answer 1

Answer:

And? What is your question?

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.