Question

Smelting of iron ore takes place through this reaction
2FeO₃(s)+3C(s)→4Fe(s)+3CO₂(g)

ΔH(f) of Fe₂O₃ and CO₂ are −8242kJmol⁻¹ and −393.7kJmol⁻¹

The reaction is
A. Endothermic
B. Exothermic
C. ΔH=0
D. None of these