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Question

Among the reactions (A) - (D), the reaction(s) that does/do not occur in the blast furnace during the extraction of iron is/are:
(A) CaO+SiO2CaSiO3
(B) 3Fe2O3+CO2Fe3O4+CO2
(C) FeO+SiO2FeSiO3
(D) FeOFe+12O2

A
A
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B
D
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C
C and D
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D
A and D
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Solution

The correct option is C C and D
In the metallurgy of iron, CaO is used as flux to remove the impurities of SiO2.
CaO+SiO2CaSiO3.

Also here Fe2O3 is reduced by CO to Fe3O4 which is further reduced to FeO which is further reduced to Fe.
3Fe2O3+CO2Fe3O4+CO2
Fe3O4+CO3FeO+CO2
FeO+COFe+CO2

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