O-LevelChemistryMetals & Reactivity5070/12 · May/June 2018 · Q201 Mark

Which reactions involve oxidation and reduction? 1 chlorine gas reacting with aqueous potassium iodide 2 dilute sulfuric acid reacting with magnesium 3 dilute hydrochloric acid reacting with aqueous sodium hydroxide

A1, 2 and 3

B1 and 2 only

C1 and 3 only

D2 and 3 only

✓ Correct answer

B: 1 and 2 only

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Topic: Metals & Reactivity, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2018 Paper 1 Variant 2, question 20.

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