Question

In the extraction of iron, the reaction which occurs at 900-1500 K in blast furnace is

• A. Fe$_2$O$_3$ + 3C → 2Fe + 3CO
• B. FeO + CO → Fe + CO$_2$
• C. 3Fe$_2$O$_3$ + CO → 2Fe$_3$O$_4$ + CO$_2$
• D. Fe$_3$O$_4$ + 4CO → 3Fe + 4CO$_2$

Hint:

Remember the different temperature zones and reactions that occur in the blast furnace during iron extraction.

Answer 1

The Correct Option is B

In the blast furnace, iron ore (Fe$_2$O$_3$) is reduced to iron in several steps. 
At 900-1500 K, the following reaction occurs: 
FeO + CO → Fe + CO$_2$ 
This is the reduction of FeO (wustite) by carbon monoxide to produce iron and carbon dioxide.