A crucible used in lab to heat solid at high temperature is made of :

A mixture containing sulphur

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A mixture containing boron

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A mixture containing graphite

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A mixture containing phosphorus

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Solution

The correct option is C A mixture containing graphite
Graphite crucibles are refractory containers specially shaped for metallurgical operations. These are made of a mixture of graphite, refractory clay, grog, and other additives.

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