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Write the chemical reactions taking place in different zones in the blast furnace for the extraction of iron from its ore.

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Write the chemical reactions taking place in different zones in the blast furnace for the extraction of iron from its ore.

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[Hint :  (i) C + CO2 => 2CO
            (ii) 3Fe2O3 + CO => 2Fe2O4 + CO2
            (iii) Fe3O4 + CO => 2FeO + CO2
             (iv) FeO + CO => Fe + CO2
             (v) CaCO3 => CaO + CO2
              (vi) CaO + SiO2 => CaSiO3

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