Arrange the following in the order in which they displace each other from the solution of their salts. Al, Cu, Fe,Mg and Zn

Explanation

The standard electrode potentials of these metals are -1.66V, +0.34V, -0.44V, -2.36V and -0.76V respectively.Hence the order will be Mg, Al, Zn, Fe and Cu. (Mg can displace all the metals from their salt solutions, Al displaces other metals expect Mg etc)