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O-LevelChemistryMetals & Reactivity5070/12 · May/June 2015 · Q311 Mark

In the extraction of iron from its ore in the blast furnace, limestone is added. What is the function of the limestone?

Ato decrease the melting point of the iron
Bto produce carbon monoxide for the reduction of the iron ore
Cto produce heat to melt the iron formed
Dto remove sand

✓ Correct answer

D: to remove sand

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About this question

Topic
Metals & Reactivity, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, May/June 2015 Paper 1 Variant 2, question 31.

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