Among the reactions (a)-(d) , the reactions (s) that does/do not occur in the blast furnance during the extraction of iron is/are
(a) CaO+SiO2→CaSiO3
(b) 3Fe2O3+CO→2Fe3O4+CO2
(c) FeO+SiO2→FeSiO3
(d) FeO→Fe+12O2
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JEE Mains 2020