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O-LevelChemistryMetals & Reactivity5070/12 · Oct/Nov 2015 · Q181 Mark

Iron is obtained in the blast furnace from the ore haematite. Which reaction 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.

✓ Correct answer

A: Calcium carbonate is used to remove acidic impurities.

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About this question

Topic
Metals & Reactivity, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, Oct/Nov 2015 Paper 1 Variant 2, question 18.

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