Question

Which of the following is the correct order in which metals displace each other from the solution of their slats?

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

Answer 1

Answer: (C)

Mg, Al, Zn, Fe, Cu

Answer 2

In reactivity series,

$\mathrm { Mg } > \mathrm { Al } > \mathrm { Zn } > \mathrm { Fe } > \mathrm { Cu }$ $\overset{\quad{Re}activitydecrease\quad}{\rightarrow}$

Hence, Mg can displace Al, Al can displace Zn and so on.