Chemistry 0620 · IGCSE · Corrosion of metals

Corrosion of metals — practice question

Steel boats can be safeguarded against rust by fixing blocks of a more reactive metal onto the boat’s hull. Which statement is correct?

  • ACopper is used for the blocks because it does not react with water.
  • BMagnesium is not used for the blocks because it reacts with steel.
  • CThe metal used for the blocks loses electrons more easily than steel.
  • DThis form of protection from rusting is called galvanising.

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