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O-LevelChemistryMetals & Reactivity5070/11 · May/June 2025 · Q271 Mark

Iron is galvanised with zinc to prevent rusting. Which type of protection is provided by galvanising?

Aalloy formation
Bbarrier and sacrificial
Cbarrier only
Dsacrificial only

✓ Correct answer

B: barrier and sacrificial

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About this question

Topic
Metals & Reactivity, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, May/June 2025 Paper 1 Variant 1, question 27.

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