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JAMB Chemistry 2001 Question 37

Question 37

Metals and their Compounds

The main impurity in iron ore during the extraction of iron is

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

Answer: A (silicon (IV) oxide)

Explanation

Iron ore contains sand, silicon (IV) oxide, which limestone removes in the blast furnace as slag (calcium trioxosilicate).