Arrange the following metals in the order in whiCHM they displace eaCHM other from the solution of their salts. `Al, Cu, Fe, Mg, ` and `Zn`.

Options

A. Cu, Fe, Zn, Al, Mg
B. Fe, Zn, Cu, Al, Mg
C. Mg, Cu, Fe, Zn, Al
D. Mg, Al, Zn, Fe, Cu

Answer

D

Explanation

Since a metal with lower electrode potential is a stronger reducing agent, Mg can displace all the given metals, Al can displace all metals except Mg. Zn can displace all metals except Mg and Al. Fe can displace only Cu. The order in which they can displace each other from their salt solutions is Mg, Al, Zn, Fe, Cu.