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Chemistry · May / June 2020 · Paper 12 · Question 30

5070Extraction of metals

Aluminium is produced by the electrolysis of pure aluminium oxide. One of the electrodes in the process has to be replaced often. Which statement is correct?

  1. AThe product at the anode reacts with the anode.
  2. BThe product at the anode reacts with the cathode.
  3. CThe product at the cathode reacts with the anode.
  4. DThe product at the cathode reacts with the cathode.

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Correct answer: A. The product at the anode reacts with the anode.

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