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Chemistry · May / June 2025 · Paper 11 · Question 27

5070Corrosion of metals

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

  1. Aalloy formation
  2. Bbarrier and sacrificial
  3. Cbarrier only
  4. Dsacrificial only

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Correct answer: B. barrier and sacrificial

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