Multiple choice

Which of the following pairs of ‘transition metal - its ore’ is not correctly matched?

  1. Ni - pentlandite

  2. Co - linnaeite

  3. Nb - scheelite

  4. Cu - malachite

  5. Hg - cinnabar
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Scheelite is a calcium tungstate mineral with the chemical formula CaWO4. Pyrochlorite (CaNaNb2O6) is an important ore/mineral of niobium.

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