Chemistry 0620 · IGCSE · Extraction of metals

Extraction of metals — practice question

Aluminium is produced from bauxite by electrolysis. Which statement is correct?

  • AAluminium ions are oxidised to form aluminium.
  • BThe cathode has to be replaced regularly because it reacts with the oxygen which is formed.
  • CCryolite is added to remove impurities.
  • DCarbon dioxide is produced at the anode.

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