O-LevelChemistryMetals & Reactivity5070/11 · Oct/Nov 2015 · Q231 Mark

Four metals and hydrogen are arranged in order of decreasing reactivity. [Figure 23.1] 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 zinc sulfate solution.

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

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

✓ 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 2015 Paper 1 Variant 1, question 23.

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