1.

Three test tubes contain aqueous solutions as under I. KCN IIgt Fe(CN)_(2) III. Mixture of KCN,Fe(CN)_(2) in molar ratio 4 : 1 pick up the correct statement

Answer»

both I and III will give test for `CN^(-)`
Both II and III will give test for `CN^(-)`
SOLUTION III will NEITHER give test for `CN^(-)` nor `Fe^(+2)` ions
Electrical CONDUCTIVITY of all solution will be same

Solution :Test tube III contains `K_(4)[Fe(CN)_(6)]`. Which does not give test for `Fe^(+2)` and `CN^(-)` ions.


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