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Chemistry · May / June 2026 · Paper 11 · Question 26

5070Corrosion of metals

The diagram shows how an underwater iron pipe can be protected from rusting. Metal Z can be ......1...... because it is ......2...... reactive than iron. Which words correctly complete gaps 1 and 2?

  1. A1: copper, 2: less
  2. B1: copper, 2: more
  3. C1: magnesium, 2: less
  4. D1: magnesium, 2: more

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Correct answer: D. 1: magnesium, 2: more

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