JEE MAIN - Chemistry (2003 - No. 32)

Standard reduction electrode potentials of three metals A,B&C are respectively +0.5 V, -3.0 V & -1.2 V. The reducing, powers of these metals are
A > B > C
C > B > A
A > C > B
B > C > A

Explanation

$$\matrix{ A & B & C \cr { + 0.5C} & { - 3.0V} & { - 1.2V} \cr } $$

NOTE : The higher the negative value of reduction potential, the more is the reducing power.

Hence $$B > C > A.$$

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