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Saturday, 31 October

JEE Main 2023 · ChemistryMultiple choiceMatch the listMediumRecall

JEE Main 8 April 2023, Shift 1, Chemistry Q79

Question 79 of 90 in this shift, Chemistry question 19 of 30, Section A.

Match List I with List II: List I (Reagents used) | List II (Compound with Functional group detected) A. Alkaline solution of copper sulphate and sodium citrate | I. [1-phenylethanol: benzene ring bearing CH(OH)CH3\mathrm{CH(OH)CH_3}] B. Neutral FeCl3\mathrm{FeCl_3} solution | II. [isopropylamine: (CH3)2CH−NH2\mathrm{(CH_3)_2CH-NH_2}] C. Alkaline chloroform solution | III. [phenylacetaldehyde: benzene ring bearing CH2CHO\mathrm{CH_2CHO}] D. Potassium iodide and sodium hypochlorite | IV. [3-ethylphenol: benzene ring with OH and ethyl in meta positions] Choose the correct answer from the options given below:

The figure, in words

List II entries are skeletal structures: I benzene ring with CH(OH)CH3 (HO on the carbon next to ring, methyl); II isopropylamine (NH2 on a branched carbon); III benzene ring with CH2-CHO; IV benzene ring with OH and an ethyl group meta to each other.
  1. (1)A-II, B-IV, C-III, D-I
  2. (2)A-IV, B-I, C-II, D-III
  3. (3)A-III, B-IV, C-I, D-II
  4. (4)A-III, B-IV, C-II, D-IOfficial answer

Official answer

Option 4

NTA final key.

Chapter
Amines
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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.