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`Fe(OH)_(3)` and `Cr(OH)_(3)` precipitates can be completely separated by `:`

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`Fe(OH)_(3)` and `Cr(OH)_(3)` precipitates can be completely separated by `:`
A. `Aq.NH_(3)`
B. `HCl`
C. `NaOH//H_(2)O_(2)`
D. `H_(2)SO_(4)`
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Correct Answer - C
Both dissolves in acids, `Cr(OH)_(3)` is partially soluble while `Fe(OH)_(3)` is not soluble in aqueous `NH_(3)`. Only `Cr(OH)_(3)` not `Fe(OH)_(3)` is soluble by `NaOH//H_(2)O_(2)` according to the reaction.
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