JEE Main 2021 · ChemistryNumerical answerNumerical valueEasyMulti-step

JEE Main 4 August 2021, Shift 1, Chemistry Q60

Question 60 of 90 in this shift, Chemistry question 30 of 30, Section B.

Number of isomeric compounds with molecular formula

\mathrm{C_4H_{11}N}

that will give carbylamine test is ________.

Official answer

NTA final key.

Chapter: Amines
Topic: Amines
Idea tested: Carbylamine Reaction

Same idea in other shifts

Asked 7× in all

2 Apr 2026, Shift 1 · Q67Match List - I with List - II. List - I (Mixture of Compounds) : A. Diethyl amine + Ethyl amine B. Acetaldehyde + Acetone C. Ethanol +…MediumMatch the list
5 Apr 2026, Shift 1 · Q66Benzyl isocyanide can be obtained from A. [figure: benzyl bromide, $\mathrm{C_6H_5CH_2Br}$ ] $\xrightarrow{\mathrm{AgCN}}$ B. [figure:…MediumOtherHas a figure
7 Apr 2025, Shift 1 · Q69Which of the following amine (s) show (s) positive carbylamine test? A. [aniline: benzene ring bearing $\mathrm{NH_2}$ ] B.…EasyOtherHas a figure
3 Aug 2021, Shift 2 · Q60The number of isomers with molecular formula $\mathrm{C_3H_9N}$ , which will react with $\mathrm{CHCl_3 + KOH}$ is…MediumNumerical value
25 Feb 2021, Shift 2 · Q48Carbylamine test is used to detect the presence of primary amino group in an organic compound. Which of the following compound is formed…EasySingle correctHas a figure
4 Sep 2020, Shift 1 · Q45Which of the following will react with $\mathrm{CHCl_3}$ + alc. KOH ?MediumSingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.