O-LevelChemistryElectrolysis5070/12 · May/June 2019 · Q201 Mark

Reduction can be defined in terms of the gain or loss of oxygen or of hydrogen or of electrons. Which row correctly describes all three definitions of reduction?

Again loss loss

Bgain loss gain

Closs loss loss

Dloss gain gain

✓ Correct answer

D: loss gain gain

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Topic: Electrolysis, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2019 Paper 1 Variant 2, question 20.

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