O-LevelChemistryMetals & Reactivity5070/11 · Oct/Nov 2020 · Q301 Mark

Four metals and hydrogen are arranged in order of decreasing reactivity. [Diagram showing a list of elements (potassium, aluminium, zinc, hydrogen, copper) with an arrow indicating decreasing reactivity] Which statement about these elements is correct?

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AAluminium is formed when aluminium oxide is heated with hydrogen.

BCopper displaces zinc from aqueous zinc sulfate.

CCopper is formed when copper(II) oxide is heated with hydrogen.

DWhen added to water, aluminium forms positive ions more readily than potassium forms positive ions.

✓ Correct answer

C: Copper is formed when copper(II) oxide is heated with hydrogen.

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Topic: Metals & Reactivity, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2020 Paper 1 Variant 1, question 30.

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