Question

why does an ordinary glass tumbler crack if very hot water is poured in it​

Answer 1

Answer:

When boiling water is poured into a thick tumbler its inner surface expands. However, due to low thermal conductivity of glass, the expansion of outer surface of the tumbler is quite small. Due to uneven expansion of the outer and inner surfaces, the tumbler breaks.

Answer 2

Answer:

cooking in the kitchen and in th bedroom

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