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underset(("Coloured"))(P("soln.")) overs...

`underset(("Coloured"))(P("soln.")) overset(Air) to underset(("Coloured"))(Q("soln.")) overset(KOH)to underset((ppt.)" (Insoluble in both excess NaOH and excess "NH_(3)" solution)")(Rdarr)`
then P contains:

A

`Cu^(2+)(aq.)`

B

`Fe^(2+)(aq.)`

C

`Cr^(2+)(aq.)`

D

`Ni^(2+)(aq.)`

Text Solution

Verified by Experts

The correct Answer is:
B
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