In melting of iron, which of the following reactions takes place in Bladt Furnace at 400C- 600C________?
A. CaO+ SiO2> CaSiO3
B. Fe2O3+ 3CO> 2Fe+ 3CO2
C. FeSiO3> FeSiO3
D. 2FeS+3O2> 2Fe+ SO2
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