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STANDARD Chemistry Displacement Reactions MCQ Question

Type: MCQ-conceptual-Medium-Class 12

Arrange the following metals in which they displace each other from the solutions of their salts in decreasing order. Al, Cu, Fe, Mg and Zn E_{Al3+l^{3+}/Al} = -1.66 V, E_{Cu2+u^{2+}/Cu} = +0.34 V, E_{Fe2+e^{2+}/Fe} = -0.44 V, E_{Mg2+g^{2+}/Mg} = -2.36 V and E_{Zn2+n^{2+}/Zn} = -0.76 V

A

Cu, Fe, Zn, Al, Mg

B

Fe, Zn, Cu, Al, Mg

C

Mg, Cu, Fe, Zn, Al

D

Mg, Al, Zn, Fe, Cu

Correct Answer

Option D

Detailed 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.

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