Chemistry 0620 · IGCSE · Extraction of metals

Extraction of metals — practice question

Which statement concerning the extraction of aluminium from aluminium oxide is correct?

  • AAluminium is formed at the positive electrode during electrolysis.
  • BPure aluminium oxide is dissolved in molten cryolite.
  • CPure aluminium oxide is electrolysed using aluminium as the positive electrode.
  • DPure aluminium oxide is heated with carbon to form carbon dioxide and aluminium.

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