The chief reaction(s), occurring in blast furnace during extraction of iron from Haematite is/are:

F e_{2} O_{3} + 3 C O \to 2 F e + 3 C O_{2}

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F e O + S i O_{2} \to F e S i O_{3}

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F e_{2} O_{3} + C \to 2 F e + 3 C O

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C a O + S i O_{2} \to C a S i O_{3}

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Solution

The correct options are
A $F e_{2} O_{3} + 3 C O \to 2 F e + 3 C O_{2}$
D $C a O + S i O_{2} \to C a S i O_{3}$
In extraction of Fe, $F e_{2} O_{3}$ is primary reduced by CO below $710^{\circ}$ and acidic impurity of $S i O_{2}$ is removed in the form of $C a S i O_{3}$ (slag).

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