Which of the following reaction(s) occur in temperature range 500 — 800 K in blast furnace(i) Fe2O3+CO⟶2FeO+CO2(ii) Fe3O4+4CO⟶3Fe+4CO2(iii) FeO+CO⟶Fe+CO2(iii) C+CO2⟶2CO

Which of the following reaction(s) occur in temperature range 500 — 800 K in blast furnace
(i) ${Fe}_{2} O_{3} + CO ⟶ 2 FeO + {CO}_{2}$
(ii) ${Fe}_{3} O_{4} + 4 CO ⟶ 3 Fe + 4 {CO}_{2}$
(iii) $FeO + CO ⟶ Fe + {CO}_{2}$
(iii) $C + {CO}_{2} ⟶ 2 CO$

A
(i) and (ii)
B
(i), (ii) and iii)
C
(ili) and (iv)
D
(iv) only

Solution:

(iii) and (iv) reactions occur in the temperature range of 900 — 1500K in blast furnace.

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