Learn

Friday, 9 October

JEE Main 2021 · ChemistryMultiple choiceAssertion–reasonEasyConceptual

JEE Main 25 July 2021, Shift 1, Chemistry Q47

Question 47 of 90 in this shift, Chemistry question 17 of 30, Section A.

Given below are two statements, one is labelled as Assertion (A) and other is labelled as Reason (R). Assertion (A) : Gabriel phthalimide synthesis cannot be used to prepare aromatic primary amines. Reason (R) : Aryl halides do not undergo nucleophilic substitution reaction. In the light of the above statements, choose the correct answer from the options given below :
  1. (1)Both (A) and (R) are true and (R) is correct explanation of (A).Official answer
  2. (2)Both (A) and (R) are true but (R) is not the correct explanation of (A).
  3. (3)(A) is true but (R) is false.
  4. (4)(A) is false but (R) is true.

Official answer

Option 1

NTA final key.

Chapter
Amines
Topic
Amines
Idea tested
Gabriel Phthalimide Synthesis

Same idea in other shifts

Asked 5× 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. 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
  4. 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. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.