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Saturday, 31 October

JEE Main 2023 · ChemistryMultiple choiceMatch the listMediumRecall

JEE Main 6 April 2023, Shift 1, Chemistry Q77

Question 77 of 90 in this shift, Chemistry question 17 of 30, Section A.

Match List I with List II LIST I (Name of reaction) | LIST II (Reagent used) A. Hell-Volhard-Zelinsky reaction | I. NaOH+I2\mathrm{NaOH + I_2} B. Iodoform reaction | II. (i) CrO2Cl2\mathrm{CrO_2Cl_2}, CS2\mathrm{CS_2} (ii) H2O\mathrm{H_2O} C. Etard reaction | III. (i) Br2\mathrm{Br_2} / red phosphorus (ii) H2O\mathrm{H_2O} D. Gatterman-Koch reaction | IV. CO, HCl, anhyd. AlCl3\mathrm{AlCl_3} Choose the correct answer from the options given below:
  1. (1)A-I, B-II, C-III, D-IV
  2. (2)A-III, B-II, C-I, D-IV
  3. (3)A-III, B-I, C-II, D-IVOfficial answer
  4. (4)A-III, B-I, C-IV, D-II

Official answer

Option 3

NTA final key.

Chapter
Aldehydes, Ketones and Carboxylic Acids
Topic
Carboxylic Acids and Derivatives
Idea tested
Hell-Volhard-Zelinsky Reaction

Same idea in other shifts

Asked 4× in all
  1. 8 Apr 2024, Shift 1 · Q79Identify the product (P) in the following reaction: [figure: cyclopentanecarboxylic acid]…EasyDiagram basedHas a figure
  2. 30 Jun 2022, Shift 1 · Q74Consider the given chemical reaction [structure: a six-membered saturated carbon ring bearing a C(=O)OH group (carbonyl O drawn above the…EasyDiagram basedHas a figure
  3. 4 Aug 2021, Shift 1 · Q44Identify the reagent in the following reaction. CH3−CH2−C(=O)−OH→ReagentCH3−CH(X)−C(=O)−OH\mathrm{CH_3-CH_2-C(=O)-OH \xrightarrow{Reagent} CH_3-CH(X)-C(=O)-OH} (X = Cl, – Br)EasySingle correctHas 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. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.