Cupellation process is used in the metallurgy of

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Iron

Silver

Lead

Copper

answer is B.

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Detailed Solution

Cupellation :

The impure metal is heated in a cupel or oval shaped crucible
made of bone ash or cement and a blast of air is passed over the molten mass. The impurities get oxidised and removed with the blast of air. For example the impurity of lead present in silver is removed by cupellation process.

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