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Consider the following reduction processes:
\[
\begin{array}{ll}
\mathrm{Zn}^{2+}+2 e^{-} \longrightarrow \mathrm{Zn}(\mathrm{s}) ; & \mathrm{E}^{\circ}=-0.76 \mathrm{~V} \\
\mathrm{Ca}^{2+}+2 e^{-} \longrightarrow \mathrm{Ca}(\mathrm{s}) ; & \mathrm{E}^{\circ}=-2.87 \mathrm{~V} \\
\mathrm{Mg}^{2+}+2 e^{-} \longrightarrow \mathrm{Mg}(\mathrm{s}) ; & \mathrm{E}^{\circ}=-2.36 \mathrm{~V} \\
\mathrm{Ni}^{2+}+2 e^{-} \longrightarrow \mathrm{Ni}(\mathrm{s}) ; & \mathrm{E}^{\circ}=-0.25 \mathrm{~V}
\end{array}
\]
\( \mathrm{P} \)
W
The reducing power of the metals increases in the order:
(a) \( \mathrm{Ca}\mathrm{Mg}\mathrm{Zn}\mathrm{Ni} \)
(b) \( \mathrm{Zn}\mathrm{Mg}\mathrm{Ni}\mathrm{Ca} \)
(c) \( \mathrm{Ni}\mathrm{Zn}\mathrm{Mg}\mathrm{Ca} \)
(d) \( \mathrm{Ca}\mathrm{Zn}\mathrm{Mg}\mathrm{Ni} \)
(JEE Main, 2019)
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