Multiple choice

Which of the following matches of ‘metal: ores’ is incorrect?

  1. Cu – malachite, chalcopyrite, azurite

  2. Fe – magnetite, hematite, siderite

  3. Mg – dolomite, brucite, magnesite

  4. Zn – calamine, sphalerite, smithsonite

  5. Al – bauxite, cryolite, chalcocite

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Bauxite, Al2O3.2H2O and cryolite, Na3AlF6 are ores of aluminium. Chalcocite (Cu2S) is an ore of copper.