Question

Match the reactions taking place in a blast furnace with temperature-range of operations:

Choose the correct alternative:

• A. A-IV, B-III, C-II, D-I
• B. A-II, B-IV, C-III, D-I
• C. A-I, B-II, C-IV, D-III
• D. A-I, B-II, C-III, D-IV

Answer 1

Answer: (B)

A-II, B-IV, C-III, D-I

In the blast furnance, at ${900}^{0}C$, $F{e}_2{O}_3$ is reduced to Fe by reaction with CO which itself is oxidized to $C{O}_2$
At around ${1000}^{0}C$, carbon reacts with carbon dioxide to form carbon monoxide.
At around ${600}^{0}C$, carbon reacts with steam to form CO and hydrogen.
At around ${1200}^{0}C$, calcium oxide reacts with silica to form calcium silicate.