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Saturday, 31 October

JEE Main 2023 · ChemistryMultiple choiceDiagram basedHardApplication

JEE Main 10 April 2023, Shift 2, Chemistry Q74

Question 74 of 90 in this shift, Chemistry question 14 of 30, Section A.

The major product 'P' formed in the given reaction is:

The figure, in words

Reactant: benzene ring bearing CH3O (top left) and NO2 (bottom left, adjacent to each other) and, on the right of the ring, a zigzag chain ending in CH(Cl)CH3 (Cl up, CH3 down); reagent 'anhy AlCl3' gives product 'P' (major).
  1. (1)[figure: tetralin skeleton with CH3O (top) and O2N (below it) on adjacent aromatic carbons of the benzene ring, and CH3 on the saturated-ring carbon next to the ring junction (bottom right)]Official answer
  2. (2)[figure: tetralin skeleton with CH3 on the saturated-ring carbon next to the ring junction at the top, beside CH3O; CH3O and O2N on adjacent aromatic carbons]
  3. (3)[figure: dimeric macrocycle - two aromatic rings, each with CH3O and NO2 substituents, joined by two bridges each of CH2-CH(CH3)-type carbons with CH3 groups (four CH3 shown)]
  4. (4)[figure: tetralin skeleton with CH3O (top) and O2N (below it) on adjacent aromatic carbons and CH3 on the saturated-ring carbon at the lower right, away from the ring junction]

Official answer

Option 1

NTA final key.

Chapter
Haloalkanes and Haloarenes
Topic
Aromatic Hydrocarbons
Idea tested
Friedel-Crafts Alkylation

Same idea in other shifts

Asked 7× in all
  1. 4 Apr 2026, Shift 2 · Q56Match the LIST-I with LIST-II List-I (Reaction): A. Williamson Synthesis B. Friedel Craft Reaction C. Bromination of vinyl benzene D.…EasyMatch the list
  2. 5 Apr 2026, Shift 1 · Q65For the following Friedel Craft's alkylation reaction, which of the statements are correct? [figure: benzene + n-propyl chloride…MediumOtherHas a figure
  3. 29 Jun 2022, Shift 2 · Q74[figure: six-membered ring drawn with alternating double bonds] + CH3CH2CH2Cl\mathrm{CH_3CH_2CH_2Cl} → 'A' Major Product (reagent over the arrow:…MediumDiagram basedHas a figure
  4. 25 Feb 2021, Shift 2 · Q42The major product of the following reaction is : [figure: benzene ring (circle inside hexagon), then an arrow with a skeletal reagent…MediumDiagram basedHas a figure
  5. 8 Jan 2020, Shift 2 · Q50In the following sequence of reactions the maximum number of atoms present in molecule 'C' in one plane is __________.…MediumNumerical value
  6. 4 Sep 2020, Shift 2 · Q45The major product [C] of the following reaction sequence will be :…HardDiagram 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.