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Chemistry · May / June 2017 · Paper 11 · Question 29

5070Extraction of metals

Some metals and the compounds in their ores are shown. metal: Al, Ca, Pb, Na, Fe, Mg compound in their ore: Al2O3, CaCO3, PbS, NaCl, Fe2O3, MgCO3 Which type of reaction occurs in the extraction of each of these metals from their ore?

  1. Adecomposition by heat
  2. Belectrolysis
  3. Cprecipitation
  4. Dreduction

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Correct answer: D. reduction

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