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

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Fe2O3+3CO→2Fe+3CO2

FeO+SiO2→FeSiO3

Fe2O3+C→2Fe+3CO

CaO+SiO2→CaSiO3

answer is A.

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Detailed Solution

In extraction of Fe, Fe2O3 is primary reduced by CO below 710oC and acidic impurity of SiO2 is removed in the form of slag (CaSiO3).

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