BPSC – Combined Competitive Examination · প্রশ্ন 92
Paramagnetism is exhibited by which of the following?
উত্তর দেখান ও ব্যাখ্যা
উত্তর: (C) Platinum
ব্যাখ্যা
Paramagnetic materials (Al, Pt, O₂) are weakly attracted; Fe, Co, Ni are ferromagnetic; Hg, Bi, Cu are diamagnetic.
- (A) ভুল
Wrong: mercury is diamagnetic.
- (B) ভুল
Wrong: iron is ferromagnetic.
- (C) সঠিক
Correct: platinum is paramagnetic.
- (D) ভুল
Wrong: nickel is ferromagnetic.
- (E) ভুল
Wrong: only one of the options A–D is correct.