BPSC – Combined Competitive Examination · வினா 92
Paramagnetism is exhibited by which of the following?
விடையைக் காட்டு & விளக்கம்
விடை: (C) Platinum
விளக்கம்
Paramagnetic materials (Al, Pt, O₂) are weakly attracted; Fe, Co, Ni are ferromagnetic; Hg, Bi, Cu are diamagnetic.
- (A) தவறு
Wrong: mercury is diamagnetic.
- (B) தவறு
Wrong: iron is ferromagnetic.
- (C) சரி
Correct: platinum is paramagnetic.
- (D) தவறு
Wrong: nickel is ferromagnetic.
- (E) தவறு
Wrong: only one of the options A–D is correct.