O-LevelChemistryElectrolysis5070/11 · May/June 2014 · Q161 Mark

In which circuit does the bulb light?

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ACircuit with Cu electrodes in aqueous CuSO₄

BCircuit with Ag and Zn electrodes in solid NaCl

CCircuit with Cu and Zn electrodes in liquid C₂H₅OH

DCircuit with Ag and Cu electrodes in aqueous H₂SO₄

✓ Correct answer

D: Circuit with Ag and Cu electrodes in aqueous H₂SO₄

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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 1, question 16.

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