MEDIUMMCQ SINGLENEET ChemistryInorganic Chemistryp-Block (group 13 and 14)Previous Year Questions

Which glass will not crack when temperature changes ? (DUMET 2006)

A.Pyrex

B.Boron silicate✓ Correct

C.Calcium silicate

D.Flint

Explanation

Boron silicates are the compounds which have very low coefficient of thermal expansion, since it is a mixture of silica and boron trioxide. Thus, boron silicates will not crack under extreme conditions. Hence, the correct option is (b).

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