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State PCS PYQPrelims 2024

BPSC – Combined Competitive Examination · Question 24

Which of the following is an iron ore?

  1. Cinnabar
  2. Bauxite
  3. Limonite
  4. Pyrite
Show answer & explanation

Answer: (C) Limonite

Explanation

Iron ores: haematite, magnetite, limonite, siderite.

  • (A) Incorrect

    Wrong: ore of mercury (HgS).

  • (B) Incorrect

    Wrong: ore of aluminium.

  • (C) Correct

    Correct: limonite is a hydrated iron oxide ore.

  • (D) Incorrect

    Wrong: iron sulphide, mainly used for sulphur, not iron extraction.