BPSC – Combined Competitive Examination · প্রশ্ন 139
Which of the following pairs will give a displacement reaction?
উত্তর দেখান ও ব্যাখ্যা
উত্তর: (A) AgNO₃ solution and copper metal
ব্যাখ্যা
Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag: a more reactive metal displaces a less reactive one.
- (A) সঠিক
Correct: copper is more reactive than silver and displaces it.
- (B) ভুল
Wrong: copper cannot displace sodium.
- (C) ভুল
Wrong: silver is less reactive than iron.
- (D) ভুল
Wrong: aluminium is less reactive than magnesium.