BPSC – Combined Competitive Examination · ప్రశ్న 139
Which of the following pairs will give a displacement reaction?
సమాధానం చూపించు & వివరణ
సమాధానం: (A) AgNO₃ solution and copper metal
వివరణ
Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag: a more reactive metal displaces a less reactive one.
- (A) సరైనది
Correct: copper is more reactive than silver and displaces it.
- (B) తప్పు
Wrong: copper cannot displace sodium.
- (C) తప్పు
Wrong: silver is less reactive than iron.
- (D) తప్పు
Wrong: aluminium is less reactive than magnesium.