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Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceSingle correctMediumMulti-step

JEE Main 25 July 2021, Shift 1, Chemistry Q46

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

Which one of the products of the following reactions does not react with Hinsberg reagent to form sulphonamide ?

The figure, in words

Each option is a reaction scheme: an aromatic nitrile with the stated reagent.
  1. (1)[figure: 4-cyanobenzaldehyde (benzene ring with CN and CHO para) + LiAlH4\mathrm{LiAlH_4}, then H3O⊕\mathrm{H_3O^{\oplus}}]
  2. (2)[figure: benzonitrile (C6H5CN) + SnCl2\mathrm{SnCl_2} + HCl]Official answer
  3. (3)[figure: 3-methylbenzonitrile (CN and CH3 meta on benzene) + H2/Ni\mathrm{H_2/Ni}]
  4. (4)[figure: 4-nitrobenzonitrile (CN and NO2 para on benzene) + Na/Hg, C2H5OH\mathrm{C_2H_5OH}]

Official answer

Option 2

NTA final key.

Chapter
Amines
Topic
Amines
Idea tested
Hinsberg Test

Same idea in other shifts

Asked 13× in all
  1. 8 Apr 2024, Shift 1 · Q90Number of amine compounds from the following giving solids which are soluble in NaOH upon reaction with Hinsberg's reagent is __________.…MediumNumerical valueHas a figure
  2. 8 Apr 2024, Shift 2 · Q79Given below are two statements : Statement (I) : All the following compounds react with p-toluenesulfonyl chloride. C6H5NH2\mathrm{C_6H_5NH_2}…MediumTwo statements
  3. 1 Feb 2024, Shift 2 · Q89Number of compounds which give reaction with Hinsberg's reagent is ________. [figure: eleven structures in three rows]MediumNumerical valueHas a figure
  4. 6 Apr 2023, Shift 1 · Q73Compound P (M.F. C14H13ON\mathrm{C_{14}H_{13}ON}; M.F. = MOLECULAR FORMULA) on treatment with HCl, Δ\Delta gives a Filter step: Residue Q and…HardDiagram basedHas a figure
  5. 27 Jul 2022, Shift 1 · Q80Match List I with List II. List I | List II A. Benzenesulphonyl chloride | I. Test for primary amines B. Hoffmann bromamide reaction | II.…MediumMatch the list
  6. 29 Jul 2022, Shift 2 · Q77The Hinsberg reagent isEasySingle correctHas a figure
  7. 26 Jun 2022, Shift 2 · Q77Which statement is NOT correct for p-toluenesulphonyl chloride?EasySingle correct
  8. 3 Aug 2021, Shift 1 · Q49Match List I with List II : List I : A. Hell-Volhard-Zelinsky reaction ; B. Hinsberg’s reagent ; C. Isocyanide test ; D. Hoffmann…EasyMatch the list

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.