O-LevelChemistryElectrolysis5070/11 · May/June 2012 · Q311 Mark

Which gases are formed during the production of aluminium by electrolysis of molten aluminium oxide?

Acarbon dioxide, carbon monoxide, oxygen

Bcarbon dioxide, carbon monoxide, sulfur dioxide

Ccarbon dioxide, oxygen, sulfur dioxide

Dcarbon monoxide, oxygen, sulfur dioxide

✓ Correct answer

A: carbon dioxide, carbon monoxide, oxygen

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Topic: Electrolysis, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2012 Paper 1 Variant 1, question 31.

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