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Saturday, 31 October

JEE Main 2021 · ChemistryNumerical answerNumerical valueMediumApplication

JEE Main 24 February 2021, Shift 2, Chemistry Q59

Question 59 of 90 in this shift, Chemistry question 29 of 30, Section B.

The total number of amines among the following which can be synthesized by Gabriel synthesis is __________. (A) [figure: CH3\mathrm{CH_3} and CH3\mathrm{CH_3} both bonded to a CH, which is bonded to CH2−NH2\mathrm{CH_2-NH_2}] (B) CH3CH2NH2\mathrm{CH_3CH_2NH_2} (C) [figure: benzene ring with a CH2−NH2\mathrm{CH_2-NH_2} group attached] (D) [figure: benzene ring with an NH2\mathrm{NH_2} group attached]

The figure, in words

Four drawn structures labelled (A)-(D): (A) two CH3 groups drawn bonded to one CH, then CH2-NH2; (B) condensed formula; (C) benzene ring (drawn with alternating double bonds) bearing CH2-NH2; (D) benzene ring (alternating double bonds) bearing NH2.

Official answer

3

NTA final key.

Chapter
Amines
Topic
Amines
Idea tested
Gabriel Phthalimide Synthesis

Same idea in other shifts

Asked 8× in all
  1. 5 Apr 2026, Shift 1 · Q68Identify the incorrect statements. A. [figure: benzylamine, C6H5CH2NH2\mathrm{C_6H_5CH_2NH_2}] is a stronger base than [figure: aniline,…MediumOtherHas a figure
  2. 6 Apr 2026, Shift 2 · Q68The number of compounds from the following which can undergo reaction with Br2\mathrm{Br_2}/KOH (alcoholic) to give respective products and…MediumOtherHas a figure
  3. 4 Apr 2024, Shift 2 · Q90Phthalimide is made to undergo following sequence of reactions. Phthalimide →(ii) Benzylchloride(i) KOH\xrightarrow[\text{(ii) Benzylchloride}]{\text{(i) KOH}} 'P'…MediumNumerical value
  4. 6 Apr 2023, Shift 2 · Q90Number of isomeric aromatic amines with molecular formula C8H11N\mathrm{C_8H_{11}N}, which can be synthesized by Gabriel Phthalimide synthesis…HardNumerical value
  5. 25 Jul 2022, Shift 1 · Q76An organic compound 'A' on reaction with NH3\mathrm{NH_3} followed by heating gives compound B. Which on further strong heating gives…MediumDiagram basedHas a figure
  6. 25 Jul 2021, Shift 1 · Q47Given below are two statements, one is labelled as Assertion (A) and other is labelled as Reason (R). Assertion (A) : Gabriel phthalimide…EasyAssertion–reason
  7. 6 Sep 2020, Shift 2 · Q28Which of the following compounds can be prepared in good yield by Gabriel phthalimide synthesis ?EasySingle correctHas a figure

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. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.