Learn

Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceDiagram basedMediumApplication

JEE Main 26 August 2021, Shift 1, Chemistry Q46

Question 46 of 90 in this shift, Chemistry question 16 of 30, Section A.

The correct options for the products A and B of the following reactions are : [figure: hexagonal ring (inner circle) with OH at top; left arrow labelled Br2\mathrm{Br_2} (Excess) / H2O\mathrm{H_2O} gives A; right arrow labelled Br2\mathrm{Br_2} / CS2\mathrm{CS_2}, < 5°C gives B]

The figure, in words

Each option shows two hexagonal rings (hexagon with inner circle), OH always at the top vertex, with Br labels at the vertices stated. Printed text in the reaction: "CS2,\mathrm{CS_{2,}} < 5∘^\circC" (comma printed as a subscript-level comma).
  1. (1)A = [figure: ring with OH at top and Br at bottom], B = [figure: ring with OH at top and Br at bottom]
  2. (2)A = [figure: ring with OH at top and Br at upper-right, lower-right and bottom vertices], B = [figure: ring with OH at top and Br at upper-left and upper-right vertices]
  3. (3)A = [figure: ring with OH at top and Br at upper-left, upper-right and bottom vertices], B = [figure: ring with OH at top and Br at bottom]Official answer
  4. (4)A = [figure: ring with OH at top and Br at upper-left, upper-right and bottom vertices], B = [figure: ring with OH at top and Br at upper-right and bottom vertices]

Official answer

Option 3

NTA final key.

Chapter
Alcohols, Phenols and Ethers
Topic
Aromatic Hydrocarbons
Idea tested
Ortho-Para vs Meta Directing

Same idea in other shifts

Asked 11× in all
  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. 8 Apr 2025, Shift 2 · Q66Choose the correct set of reagents for the following conversion. Ethyl benzene → [structure: p-bromostyrene, i.e. benzene ring with CH=CH2…MediumSingle correctHas a figure
  3. 1 Feb 2024, Shift 1 · Q88Total number of deactivating groups in aromatic electrophilic substitution reaction among the following is ________.…MediumNumerical valueHas a figure
  4. 1 Feb 2024, Shift 2 · Q74The set of meta directing functional groups from the following sets is :EasySingle correct
  5. 27 Jan 2024, Shift 1 · Q88Among the following, total number of meta directing functional groups is __________. (Integer based)…EasyNumerical value
  6. 24 Jun 2022, Shift 1 · Q73In the given reaction sequence, the major product 'C' is :…MediumSingle correctHas a figure
  7. 26 Jun 2022, Shift 2 · Q74Halogenation of which one of the following will yield m-substituted product with respect to methyl group as a major product?MediumSingle correctHas a figure
  8. 26 Aug 2021, Shift 2 · Q44[reaction scheme] drawn structure --(Br2\mathrm{Br_2} / AlBr3\mathrm{AlBr_3} (C2H5)2O(\mathrm{C_2H_5})_2\mathrm{O})--> ‘A’ (Major Product) Consider…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.