BPSC – Combined Competitive Examination · प्रश्न 139
Which of the following pairs will give a displacement reaction?
उत्तर दाखवा आणि स्पष्टीकरण
उत्तर: (A) AgNO₃ solution and copper metal
स्पष्टीकरण
Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag: a more reactive metal displaces a less reactive one.
- (A) बरोबर
Correct: copper is more reactive than silver and displaces it.
- (B) चूक
Wrong: copper cannot displace sodium.
- (C) चूक
Wrong: silver is less reactive than iron.
- (D) चूक
Wrong: aluminium is less reactive than magnesium.