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Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative Assertion (A) : Glass tumbler breaks in winter when hot water is poured in it. Reason (R) : When hot water is poured. the outer surface of glass expands.

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative Assertion (A) : Glass tumbler breaks in winter when hot water is poured in it. Reason (R) : When hot water is poured. the outer surface of glass expands. Correct Answer A is true but R is false.

When in winter, hot water is poured in the glass tumbler. its inner surface tends to expand while the Outer surface in contact with cold atmosphere does not. This opposite interaction causes the tumbler to break. 

Related Questions

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