In aqueous solution, \( \mathrm{H}_{2} \) will not reduce : (a) \( \mathrm{Fe}^{3+} \) (b) \( \m...

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In aqueous solution, \( \mathrm{H}_{2} \) will not reduce :
(a) \( \mathrm{Fe}^{3+} \)
(b) \( \mathrm{Cu}^{2+} \)
\( \mathrm{P} \)
(c) \( \mathrm{Ag}^{+} \)
(d) \( \mathrm{Zn}^{2+} \)
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