મુખ્ય સામગ્રી પર જાઓ

State PCS PYQPrelims 2022

BPSC – Combined Competitive Examination · પ્રશ્ન 92

Paramagnetism is exhibited by which of the following?

Mercury
Iron
Platinum
Nickel
None of the above / More than one of the above

જવાબ બતાવો અને સમજૂતી

જવાબ: (C) Platinum

સમજૂતી

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

(A) ખોટો
Wrong: mercury is diamagnetic.
(B) ખોટો
Wrong: iron is ferromagnetic.
(C) સાચો
Correct: platinum is paramagnetic.
(D) ખોટો
Wrong: nickel is ferromagnetic.
(E) ખોટો
Wrong: only one of the options A–D is correct.