Glass will crack if it is suddenly heated or cooled, because of its ___________.

bad conducting nature and high co-efficient of expansion

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transparency

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plasticity

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density

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Solution

The correct option is D bad conducting nature and high co-efficient of expansion
The glass breaks on heating due to thermal shock. Whenever there is difference in temperature between two surfaces of the glass, the thermal expansion of one side with respect to other side induces stress in the material. When this stress reaches above the yield strength of the material the cracks start to develop.

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