A) Resorcinol
B) Dimethyl glyoxime
C) Diphenyl benzidine
D) Potassium ferrocyanide
Correct Answer: B
Solution :
Nickel salts reacts with dimethyl glyoxime in presence of \[N{{H}_{4}}OH\]to give red ppt. of nickel dimethyl glyoxime. \[\,\,\,\,\,\,\,\begin{matrix} C{{H}_{3}}-C=NOH \\ 2| \\ C{{H}_{3}}-C=NOH \\ \end{matrix}+NiC{{l}_{2}}+2N{{H}_{4}}OH\xrightarrow{{}}\]
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