Question

Which of the following metals can displace the other three metals from the solution of their salts? Mg,Ag,Zn,Cu.

Answer 1

Magnesium will replace because it is the most reactive metal in the given metals

Answer 2

Magnesium is the most reactive of all the rest three metals so it will displace Ag,Zn,Cu from their salt solution.

Eg-

Mg+CuSo4 -> MgSo4 + Cu

Mg + ZnSo4 -> MgSo4 + Zn

Mg + AgCl  -> MgCl2 + Ag

Hope this helps....