O-LevelChemistryMetals & Reactivity5070/12 · Oct/Nov 2016 · Q311 Mark

Electrical energy can be generated using simple cells as shown. Which pair of metals, when used as electrodes, will give the largest reading on the voltmeter, V?

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Alead and sodium

Bmagnesium and copper

Cpotassium and silver

Dsodium and potassium

✓ Correct answer

C: potassium and silver

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Topic: Metals & Reactivity, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2016 Paper 1 Variant 2, question 31.

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