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Chemistry · May / June 2021 · Paper 12 · Question 34

5070Reactivity series

Which statement about the preparation and properties of aluminium is correct?

  1. AAluminium is obtained by heating aluminium oxide with carbon.
  2. BAluminium is produced at the anode by electrolysis of aluminium oxide dissolved in molten cryolite.
  3. CAluminium is unreactive as it forms an oxide coating.
  4. DAluminium is used in overhead electricity cables as it is a good conductor of electricity and has a high density.

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Correct answer: C. Aluminium is unreactive as it forms an oxide coating.

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