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O-LevelChemistryElectrolysis5070/11 · Oct/Nov 2025 · Q271 Mark

Aluminium is extracted from molten aluminium oxide by electrolysis. Which material is used for the electrodes in the industrial extraction?

Aaluminium
Bcarbon
Ccryolite
Dplatinum

✓ Correct answer

B: carbon

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About this question

Topic
Electrolysis, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, Oct/Nov 2025 Paper 1 Variant 1, question 27.

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