O-LevelChemistryMetals & Reactivity5070/11 · Oct/Nov 2014 · Q291 Mark

Substance P reacts with dilute hydrochloric acid to produce a gas. This gas reduces substance Q. What are substances P and Q? P | Q || A copper | copper(II) oxide || B lead | lead(II) oxide || C magnesium | zinc oxide || D zinc | copper(II) oxide

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Acopper | copper(II) oxide

Blead | lead(II) oxide

Cmagnesium | zinc oxide

Dzinc | copper(II) oxide

✓ Correct answer

D: zinc | copper(II) oxide

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Topic: Metals & Reactivity, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2014 Paper 1 Variant 1, question 29.

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