The slag formed in the extraction of iron from haematite in the blast furnace is:

F e S i O_{3}

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C a S i O_{3}

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M g S i O_{3}

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C a_{3} (P O_{4})_{2}

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Solution

The correct option is B $C a S i O_{3}$
The slag formed in the extraction of iron from haematite in the blast furnace is $C a S i O_{3}$ . The reaction in the blast furnace is as follows:
$C a O + S i O_{2} \to C a S i O_{3}$ (slag)

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