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[" 1.How do we differentiate between "Fe...

[" 1.How do we differentiate between "Fe^(3+)" and "Cr^(3+)],[" in group III? "],[" (a) By taking excess of "NH_(4)OH" solution "],[" (b) By increasing "NH_(4)^(+)" ion concentration "],[" (c) By decreasing "OH^(-)" ion concentration "],[" (d) Both (b) and (c)."]

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