Chemistry · May / June 2018 · Paper 11 · Question 32
Iron is obtained in the blast furnace from the ore haematite. Which process takes place in the blast furnace?
- ACalcium carbonate is used to remove acidic impurities.
- BCoke is reduced to carbon dioxide.
- CHaematite is oxidised by carbon monoxide.
- DHaematite undergoes thermal decomposition.
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Correct answer: A. Calcium carbonate is used to remove acidic impurities.
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