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Saturday, 31 October

JEE Main 2024 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 9 April 2024, Shift 1, Chemistry Q78

Question 78 of 90 in this shift, Chemistry question 18 of 30, Section A.

Correct order of basic strength of Pyrrole (five-membered ring with NH), Pyridine (six-membered aromatic ring with N) and Piperidine (saturated six-membered ring with NH) is :

The figure, in words

Structures of pyrrole, pyridine and piperidine are drawn inline in the stem, each with the nitrogen lone pair shown.
  1. (1)Piperidine > Pyridine > PyrroleOfficial answer
  2. (2)Pyrrole > Pyridine > Piperidine
  3. (3)Pyrrole > Piperidine > Pyridine
  4. (4)Pyridine > Piperidine > Pyrrole

Official answer

Option 1

NTA final key.

Chapter
Amines
Topic
Amines
Idea tested
Basicity of Nitrogen Heterocycles

Same idea in other shifts

Asked 5× in all
  1. 27 Jan 2024, Shift 1 · Q77Which of the following is strongest Bronsted base ?EasyDiagram basedHas a figure
  2. 4 Aug 2021, Shift 2 · Q46For the compounds below given [structures I, II, III, IV: see figure_note] the correct order of basicity isMediumDiagram basedHas a figure
  3. 9 Jan 2020, Shift 2 · Q39The decreasing order of basicity of the following amines is :MediumSingle correctHas a figure
  4. 5 Sep 2020, Shift 1 · Q27The increasing order of basicity of the following compounds is :MediumDiagram basedHas 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.