\( \mathrm{Fe}(\mathrm{OH})_{3} \) and \( \mathrm{Cr}(\mathrm{OH})_...
\( \mathrm{Fe}(\mathrm{OH})_{3} \) and \( \mathrm{Cr}(\mathrm{OH})_{3} \) precipitates can be completely separated by :
\( \mathrm{P} \)
(a) Aq. \( \mathrm{NH}_{3} \)
(b) \( \mathrm{HCl} \)
W
(c) \( \mathrm{NaOH} / \mathrm{H}_{2} \mathrm{O}_{2} \)
(d) \( \mathrm{H}_{2} \mathrm{SO}_{4} \)
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