JEE Main 2021ChemistrySalt AnalysisSystematic Analysis Of CationseasyMCQ

JEE Main 2021 — Salt Analysis Question with Solution

From: JEE Main 2021 (Online) 25th February Evening Shift

Question

Given below are two statements :

Statement I : The identification of Ni2+ is carried out by dimethyl glyoxime in the presence of NH4OH.

Statement II : The dimethyl glyoxime is a bidentate neutral ligand.

In the light of the above statements, choose the correct answer from the options given below :

Choose an option

Show full solutionCorrect option: D
Correct answer
DBoth Statement I and Statement II are true.

Step-by-step explanation

Statement I is true. Dimethyl glyoxime (DMG) is a chelating reagent commonly used for the identification of Ni2+ ions in aqueous solution. In the presence of ammonium hydroxide (NH4OH), Ni2+ reacts with dimethyl glyoxime to form a deep red-colored complex, which can be used to confirm the presence of Ni2+ ions.

Statement II is also true. Dimethyl glyoxime is a neutral bidentate ligand, which means it has two donor atoms that can coordinate with a metal ion, and its overall charge is neutral.

JEE Main 2021 (Online) 25th February Evening Shift Chemistry - Salt Analysis Question 30 English Explanation

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About this question

This is a previous-year question from JEE Main 2021, covering the Salt Analysis chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.