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p-amino-N, N-dimethyl laniline is added ...

p-amino-N, N-dimethyl laniline is added to a strongly acidci solution of x. The resulting solution is treated with a few drops of aqueous solution of Y to yield blue colouration due to the formation of methylene, blue. Treatment of the aqueous solution of Y with the reagent potassium hexaxyanoferrate (II) leads to the formation of an intense blue precipitate. The precipitate of the solution of Y with the solution of potassium hexacyanoferrate (III) leads to a brown colouration due to the formation of Z.

A

`Mg_(2)[Fe(CN)_(6)]`

B

`Fe[Fe(CN)_(6)]`

C

`Fe_(4)[Fe(CN)_(6)]_(3)`

D

`K_(2)Zn_(3)[Fe(CN)_(6)]_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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p-Amino-N,N-dimethylaniline is added to a strongly acidic solution of X. The resulting solution is treated with a few drops of aqueous solution of Y to yield blue colouration due to the formation of methylene blue. Treatment of aqueous solution of Y with reagent potassium hexacyanoferrate (II) leads to the formation of an intense blue precipitate. The precipitate dissolves on excess addition of the reagent. Similarly, the treatment of the solution of Y with the solution of potassium hexacyanoferrate (III) leads to a brown colouration due to the formation of Z. Q. Compound Y is

p-Amino-N,N-dimethylaniline is added to a strongly acidic solution of X. The resulting solution is treated with a few drops of aqueous solution of Y to yield blue colouration due to the formation of methylene blue. Treatment of aqueous solution of Y with reagent potassium hexacyanoferrate (II) leads to the formation of an intense blue precipitate. The precipitate dissolves on excess addition of the reagent. Similarly, the treatment of the solution of Y with the solution of potassium hexacyanoferrate (III) leads to a brown colouration due to the formation of Z. Q. Compound X is

p-Amino-N,N-dimethylaniline is added to a strongly acidic solution of X. The resulting solution is treated with a few drops of aqueous solution of Y to yield blue colouration due to the formation of methylene blue. Treatment of aqueous solution of Y with reagent potassium hexacyanoferrate (II) leads to the formation of an intense blue precipitate. The precipitate dissolves on excess addition of the reagent. Similarly, the treatment of the solution of Y with the solution of potassium hexacyanoferrate (III) leads to a brown colouration due to the formation of Z. Q. Compound Z is