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Chemistry · May / June 2024 · Paper 11 · Question 31

5070Extraction of metals

Which reactions take place during the extraction of aluminium from aluminium oxide using carbon electrodes? 1 2O2– → O2 + 4e– 2 C + O2 → CO2 3 Al2+ + 2e– → Al

  1. A1, 2 and 3
  2. B1 and 2 only
  3. C1 only
  4. D2 and 3 only

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Correct answer: B. 1 and 2 only

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