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Conectrated aqueous sodium hydroxide can...

Conectrated aqueous sodium hydroxide can be a separated mixture of

A

`Al^(3+)` and `Sn^(2+)`

B

`Al^(3+)` and `Fe^(3+)`

C

`Al^(3+)` and `Zn^(2+)`

D

`Zn^(2+)` and `Pb^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
B
`NaOH + Al^(=3) rarr underset(("Soluble in NaOH"))underset("Sod.metaaluminate")(NaAIO_(2))`
`NaOH +Fe^(+3) rarr` No reaction (Insoluble in NaOH)
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