The ion which is not precipitated by \( \mathrm{H}_{2} \mathrm{~S} \) in the presence of \( \mat...

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The ion which is not precipitated by \( \mathrm{H}_{2} \mathrm{~S} \) in the presence of \( \mathrm{HCl} \) is:
(a) \( \mathrm{Cu}^{2+} \)
(b) \( \mathrm{Ag}^{+} \)
(c) \( \mathrm{Pb}^{2+} \)
(d) \( \mathrm{Al}^{3+} \)
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