What is the chemical composition of 'slag' formed during smelting in the extraction of copper?

C u_{2} S i O_{3}

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F e S i O_{3}

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C u F e S_{2}

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C u S i O_{3}

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Solution

The correct option is B $F e S i O_{3}$
Slag is $F e S i O_{3}$ which is formed in blast furnace when $S i O_{2}$ is added as flux to the $F e O$ produced after roasting of ore.

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The chemical composition of slag formed during smelting process in the extraction of Cu is

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