Question

why does a glass tumbler crack when very hot milk is poured into it
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Answer 1

Answer:

because hot milk expand the glass

Answer 2

Answer:

hope it will help you ☺️

Explanation:

when you pour a very hot liquid into a thick tumbler what happens is, the surface of glass that comes in contact with the hot liquid heats up and expands as per its coefficient of thermal expansion, while the outer layer still remain cold and does not expands (because glass is a poor conductor and does not carry heat quickly).

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