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
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
A. both I and III will give test for `CN^(-)`
B. Both II and III will give test for `CN^(-)`
C. Solution III will neither give test for `CN^(-)` nor `Fe^(+2)` ions
D. Electrical conductivity of all solution will be same
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Correct Answer - 3
Test tube III contains `K_(4)[Fe(CN)_(6)]`. Which does not give test for `Fe^(+2)` and `CN^(-)` ions.
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