O-LevelChemistryElectrolysis5070/12 · May/June 2020 · Q191 Mark

Many reactions can be classified as redox reactions. Which equations show redox reactions? 1 Mg + 2HCl → MgCl2 + H2 2 2FeCl2 + Cl2 → 2FeCl3 3 2Na + Br2 → 2NaBr

A1, 2 and 3

B1 and 2 only

C2 and 3 only

D3 only

✓ Correct answer

A: 1, 2 and 3

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Topic: Electrolysis, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2020 Paper 1 Variant 2, question 19.

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