State PCS PYQPrelims 2022

BPSC – Combined Competitive Examination · Question 92

Paramagnetism is exhibited by which of the following?

  1. Mercury
  2. Iron
  3. Platinum
  4. Nickel
  5. None of the above / More than one of the above
Show answer & explanation

Answer: (C) Platinum

Explanation

Paramagnetic materials (Al, Pt, O₂) are weakly attracted; Fe, Co, Ni are ferromagnetic; Hg, Bi, Cu are diamagnetic.

  • (A) Incorrect

    Wrong: mercury is diamagnetic.

  • (B) Incorrect

    Wrong: iron is ferromagnetic.

  • (C) Correct

    Correct: platinum is paramagnetic.

  • (D) Incorrect

    Wrong: nickel is ferromagnetic.

  • (E) Incorrect

    Wrong: only one of the options A–D is correct.