Chemistry 0620 · IGCSE · Extraction of metals

Extraction of metals — practice question

What is the reason for using cryolite in the extraction of aluminium by electrolysis?

  • AIt changes bauxite to aluminium oxide.
  • BIt decreases the melting point of the aluminium.
  • CIt dissolves the aluminium oxide.
  • DIt protects the anodes from corrosion.

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