Q.

When hot liquid is poured into a thick glass tumbler, it cracks because glass –

A. is a bad conductor of heat so only inner surface expands
B. has high temperature coefficient of expansion
C. has a very low specific heat
D. has low temperature coefficient of expansion
Answer» A. is a bad conductor of heat so only inner surface expands
Explanation: When hot liquid is poured into a thick glass tumbler, it cracks because glass is abad conductor of heat so only inner surface expands.
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