${\rm{C}}{{\rm{u}}^{2 + }}$ ions give precipitate with ${{\rm{K}}_4}{\rm{Fe}}{\left( {{\rm{CN}}} \right)_6}$. The colour of precipitate is:

NEET UG CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

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\mathrm{C}{\mathrm{u}^{2 + }}

ions give precipitate with

{\mathrm{K}_4}\mathrm{Fe}{\left( {\mathrm{CN}} \right)_6}

. The colour of precipitate is:

View answer and explanation

Correct option: D

Brown

Option C (Red) is incorrect. Option D (Brown) is correct because the reaction between

\mathrm{C}{\mathrm{u}^{2 + }}

and

{\mathrm{K}_4}\mathrm{Fe}{\left( {\mathrm{CN}} \right)_6}

produces a brown precipitate of copper ferrocyanide.