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O-LevelChemistryElectrolysis5070/11 · May/June 2024 · Q121 Mark

Which row shows the substances that can be electrolysed?

Aaqueous sodium chloride ✓ copper X graphite ✓ molten lead(II) bromide X
Baqueous sodium chloride X copper ✓ graphite X molten lead(II) bromide ✓
Caqueous sodium chloride ✓ copper ✓ graphite X molten lead(II) bromide ✓
Daqueous sodium chloride X copper X graphite ✓ molten lead(II) bromide X

✓ Correct answer

B: aqueous sodium chloride X copper ✓ graphite X molten lead(II) bromide ✓

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About this question

Topic
Electrolysis, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, May/June 2024 Paper 1 Variant 1, question 12.

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