Question

The chemical process in the production of steel from haematite ore involves ___________.

• A. reduction
• B. oxidation
• C. reduction followed by oxidation
• D. oxidation followed by reduction

Answer 1

The correct option is D oxidation followed by reduction

The chemical process in the production of steel from haematite ore involves oxidation followed by reduction.
Ferrous oxide is oxidized to ferric oxide.
$4FeO+O_2\to 2F{e}_2{O}_3$
Ferric oxide is reduced to iron metal.
$F{e}_2{O}_3+3CO\stackrel{{400}^{0}C-{700}^{0}C}{\to }2Fe+3C{O}_2$