Chemistry 5070 · O Level · Extraction of metals

Extraction of metals — practice question

An earlier industrial method for extracting aluminium used large amounts of sodium to change aluminium ions into aluminium atoms. The present aluminium extraction process makes use of electrolysis. Which statements are correct?

  • AOld process: 1 and 2; Modern process: 3 and 4
  • BOld process: 1 and 2; Modern process: 3 only
  • COld process: 1 only; Modern process: 4 only
  • DOld process: 2 only; Modern process: 3 and 4

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