If in the group III analysis of cations we get P reddish brown prec...

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If in the group III analysis of cations we get
P reddish brown precipitates it indicates-

W
(1) \( \mathrm{Al}^{3+} \)
(2) \( \mathrm{Fe}^{3+} \)
(3) \( \mathrm{Cr}^{3+} \)
(4) None
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