O-LevelChemistryMetals & Reactivity5070/11 · Oct/Nov 2012 · Q261 Mark

Iron pipes corrode rapidly when exposed to sea water. Which metal, when attached to the iron, would not offer protection against corrosion?

Aaluminium

Bcopper

Cmagnesium

Dzinc

✓ Correct answer

B: copper

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Topic: Metals & Reactivity, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2012 Paper 1 Variant 1, question 26.

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