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Friday, 9 October

JEE Main 2026 · ChemistryMultiple choiceDiagram basedMediumMulti-step

JEE Main 4 April 2026, Shift 1, Chemistry Q67

Question 67 of 75 in this shift, Chemistry question 17 of 25, Section A.

Product C of the following reaction sequence will be aniline →Br2/water\xrightarrow{\mathrm{Br_2/water}} A (Major Product) →273−278 KNaNO2/HCl\xrightarrow[273-278\ \mathrm{K}]{\mathrm{NaNO_2/HCl}} B →(ii) NaNO2, Cu, Δ(i) HBF4\xrightarrow[\mathrm{(ii)\ NaNO_2,\ Cu,\ \Delta}]{\mathrm{(i)\ HBF_4}} C

The figure, in words

Reaction scheme: aniline (benzene ring with NH2) treated with Br2/water gives A (major product), then NaNO2/HCl at 273-278 K gives B, then (i) HBF4 (ii) NaNO2, Cu, heat gives C.
  1. (1)1-Bromo-4-nitrobenzene
  2. (2)1, 3, 5-Tribromo-2-nitrobenzeneOfficial answer
  3. (3)4-Bromo-1-nitrobenzene
  4. (4)1, 3, 5-Tribromobenzene

Official answer

Option 2

NTA final key.

Chapter
Amines
Topic
Diazonium Salts
Idea tested
Replacement by Nitro Group

Same topic in other shifts

All Diazonium Salts questions
  1. 2 Apr 2026, Shift 2 · Q68Identify compounds A and E in the following reaction sequence.…MediumSingle correctHas a figure
  2. 6 Apr 2026, Shift 1 · Q72Consider the following sequence of reactions. [C6H5−N=N−NH−C6H5\mathrm{C_6H_5-N=N-NH-C_6H_5}]…MediumNumerical valueHas a figure
  3. 6 Apr 2026, Shift 2 · Q67Consider the following organic reaction sequence. Choose the final product (X) from the following (consider the major product in all…HardSingle correctHas a figure
  4. 2 Apr 2025, Shift 2 · Q69When a concentrated solution of sulphanilic acid and 1-naphthylamine is treated with nitrous acid (273 K) and acidified with acetic acid,…MediumSingle correct
  5. 3 Apr 2025, Shift 1 · Q66Identify [A], [B] and [C], respectively in the following reaction sequence: [A] --(NaNO2_2, HCl, 273 - 278 K)--> benzenediazonium…EasyDiagram basedHas a figure
  6. 3 Apr 2025, Shift 1 · Q69In the following reactions, which one is NOT correct?EasyDiagram 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 42 of the 174 JEE Main shifts held from 2017 to 2026.