Chemistry PYQ 82 of 152 · Everyday Chemistry

Which of the following is an iron ore?

  1. ACinnabar
  2. BBauxite
  3. CLimonite
  4. DPyrite

70th BPSC

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Correct answer: (c) Limonite

Explanation

Limonite (Fe₂O₃·nH₂O), a hydrated iron oxide, is an iron ore alongside hematite and magnetite.

Cinnabar is a mercury ore, bauxite an aluminium ore, and pyrite (FeS₂) is used mainly for sulphur, not iron.

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