O-LevelChemistryElectrolysis5070/11 · Oct/Nov 2018 · Q291 Mark

An old commercial process for aluminium extraction used large quantities of sodium to convert aluminium ions into aluminium atoms. The modern aluminium extraction process uses electrolysis. Which statements are correct?

AIn the old process: 1 and 2, In the modern process: 3 and 4

BIn the old process: 1 and 2, In the modern process: 3 only

CIn the old process: 1 only, In the modern process: 4 only

DIn the old process: 2 only, In the modern process: 3 and 4

✓ Correct answer

D: In the old process: 2 only, In the modern process: 3 and 4

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Topic: Electrolysis, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2018 Paper 1 Variant 1, question 29.

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