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JAMB Chemistry 1993 Question 38

Question 38

Metals and their Compounds

The active reducing agent in the blast furnace for the extraction of iron is

  1. A.carbon
  2. B.limestone
  3. C.carbon (II) oxide
  4. D.calcium oxide
Show the answer and explanation

Answer: C (carbon (II) oxide)

Explanation

Coke burns to CO2, which reacts with more hot coke to form CO. The CO reduces the iron ore: Fe2O3 + 3CO → 2Fe + 3CO2.