JEE Main 2022ChemistryAminesHardMCQ

JEE Main 2022 — Amines Question with Solution

JEE Main 2022 (27 Jul Shift 2)

Question

An organic compound 'A' contains nitrogen and chlorine. It dissolves readily in water to give a solution that turns litmus red. Titration of compound 'A' with standard base indicates that the molecular weight of 'A' is 131±2. When a sample of 'A' is treated with aq. NaOH, a liquid separates which contains N but not Cl. Treatment of the obtained liquid with nitrous acid followed by phenol gives orange precipitate. The compound 'A' is

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Show full solutionCorrect option: D
Correct answer
D

Step-by-step explanation

Anilinium chloride is acidic in solution and turns blue litmus red. With Nitrous acid, it forms benzendiazonium chloride. Which reacts with phenol in alkaline medium gives orange coloured solution where the reaction follows electrophilic substitution reaction and the electrophile is benzene diazonium ion

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About this question

This is a previous-year question from JEE Main 2022, covering the Amines 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.