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Friday, 9 October

JEE Main 2024 · ChemistryMultiple choiceDiagram basedMediumDiagram reading

JEE Main 29 January 2024, Shift 1, Chemistry Q80

Question 80 of 90 in this shift, Chemistry question 20 of 30, Section A.

The arenium ion which is not involved in the bromination of Aniline is ________.

The figure, in words

Four bromoarenium-type ions of aniline drawn as ring structures; charges printed as circled signs.
  1. (1)[figure: cyclohexadiene ring with =N(+)H2 (circled plus) on the top carbon and an adjacent sp3 carbon bearing H and Br (ortho)]
  2. (2)[figure: cyclohexadiene ring with =N(+)H2 (circled plus) on the top carbon and the sp3 carbon bearing H and Br at the opposite (para) position]
  3. (3)[figure: cyclohexadiene ring with NH2 on a carbon, circled minus charge on the next ring carbon, and an sp3 carbon bearing H and Br after it (meta to NH2)]Official answer
  4. (4)[figure: cyclohexadiene ring with NH2 on a carbon, adjacent sp3 carbon bearing H and Br (ortho), and circled minus charge on the ring carbon at the bottom]

Official answer

Option 3

NTA final key.

Chapter
Amines
Topic
Aromatic Hydrocarbons
Idea tested
EAS Sigma Complex Mechanism

Same topic in other shifts

All Aromatic Hydrocarbons questions
  1. 2 Apr 2026, Shift 1 · Q66For the given molecule, "xx", the preferred site for the attack of the electrophile is :MediumDiagram basedHas a figure
  2. 4 Apr 2026, Shift 1 · Q72Consider the following sequence of reactions to give the major product (X) benzene…MediumNumerical valueHas a figure
  3. 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
  4. 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
  5. 8 Apr 2026, Shift 2 · Q64The total number of aromatic compounds/species from the following is [figures: p-benzoquinone; tropylium cation (cycloheptatrienyl…MediumOtherHas a figure
  6. 8 Apr 2026, Shift 2 · Q72'xx' is the product which is obtained from benzene by reacting it with carbon monoxide and hydrogen chloride in the presence of cuprous…MediumNumerical value

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 42 of the 174 JEE Main shifts held from 2017 to 2026.