JEE Main 2022 · 24 Jun · Shift 1 · Chemistry Q80

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ChemistrySingle correct+4 / -1Question 80 of 90

During the qualitative analysis of salt with cation $y^{2+}$ , addition of a reagent (X) to alkaline solution of the salt gives a bright red precipitate. The reagent (X) and the cation ( $y^{2+}$ ) present respectively are :

Dimethylglyoxime and

\mathrm{Ni^{2+}}

Dimethylglyoxime and

\mathrm{Co^{2+}}

Nessler's reagent and

\mathrm{Hg^{2+}}

Nessler's reagent and

\mathrm{Ni^{2+}}

Answer and worked solution

Official answer: A

Test. In ammoniacal (alkaline) solution, dimethylglyoxime gives a bright red precipitate of nickel dimethylglyoximate with $\mathrm{Ni^{2+}}$ .

(A)

Topics:Cation analysis

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JEE Main 2022 · 24 Jun · Shift 1, Chemistry question 80