BPSC – Combined Competitive Examination · ಪ್ರಶ್ನೆ 139
Which of the following pairs will give a displacement reaction?
ಉತ್ತರ ತೋರಿಸು ಮತ್ತು ವಿವರಣೆ
ಉತ್ತರ: (A) AgNO₃ solution and copper metal
ವಿವರಣೆ
Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag: a more reactive metal displaces a less reactive one.
- (A) ಸರಿ
Correct: copper is more reactive than silver and displaces it.
- (B) ತಪ್ಪು
Wrong: copper cannot displace sodium.
- (C) ತಪ್ಪು
Wrong: silver is less reactive than iron.
- (D) ತಪ್ಪು
Wrong: aluminium is less reactive than magnesium.