Question

A reagent which gives brilliant red precipitate with Nickel ions in basic medium is

• A. sodium nitroprusside
• B. neutral FeCl$_3$
• C. meta-dinitrobenzene
• D. dimethyl glyoxime

Answer 1

Answer: (D)

dimethyl glyoxime

Answer 2

The reagent that gives a brilliant red precipitate with Nickel ions ($\text{Ni}^{2+}$) in a basic medium is dimethyl glyoxime (dmg). When $\text{Ni}^{2+}$ reacts with dimethyl glyoxime, it forms a complex that produces a bright red precipitate. The reaction is as follows:
$\text{Ni}^{2+} + \text{dmg} \rightarrow [\text{Ni}(\text{dmg})_2] \, \, (\text{Rosy red/Bright Red precipitate})$

Thus, the correct answer is dimethyl glyoxime.

The Correct Answer is: dimethyl glyoxime