O-LevelChemistryElectrolysis5070/12 · May/June 2014 · Q181 Mark

In which circuit does the bulb light?

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ACircuit with copper electrodes in aqueous copper(II) sulfate

BCircuit with silver and zinc electrodes in solid sodium chloride

CCircuit with copper and zinc electrodes in liquid ethanol

DCircuit with silver and copper electrodes in aqueous sulfuric acid

✓ Correct answer

D: Circuit with silver and copper electrodes in aqueous sulfuric acid

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Topic: Electrolysis, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2014 Paper 1 Variant 2, question 18.

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