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O-LevelChemistryElectrolysis5070/11 · May/June 2018 · Q151 Mark

The diagram shows apparatus that can be used to extract aluminium from its ore. What are J, K and L?

Diagram for this question, from the exam paper

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Anegative electrode, aluminium oxide + cryolite, aluminium
Bnegative electrode, cryolite, aluminium oxide
Cpositive electrode, aluminium oxide, cryolite
Dpositive electrode, aluminium oxide + cryolite, aluminium

✓ Correct answer

D: positive electrode, aluminium oxide + cryolite, aluminium

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About this question

Topic
Electrolysis, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, May/June 2018 Paper 1 Variant 1, question 15.

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