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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 26 July 2022, Shift 2, Chemistry Q73

Question 73 of 90 in this shift, Chemistry question 13 of 30, Section A.

The correct decreasing order of priority of functional groups in naming an organic compound as per IUPAC system of nomenclature is

The figure, in words

Option C ends with a carbonyl group drawn as a carbon with two open single bonds and a double bond to O (written as >C=O)
  1. (1)−COOH>−CONH2>−COCl>−CHO\mathrm{-COOH > -CONH_2 > -COCl > -CHO}
  2. (2)−SO3H>−COCl>−CONH2>−CN\mathrm{-SO_3H > -COCl > -CONH_2 > -CN}Official answer
  3. (3)−COOR>−COCl>−NH2>\mathrm{-COOR > -COCl > -NH_2 >} C=O (carbonyl group drawn as a carbon with two open bonds and a double bond to O)
  4. (4)−COOH>−COOR>−CONH2>−COCl\mathrm{-COOH > -COOR > -CONH_2 > -COCl}

Official answer

Option 2

NTA final key.

Chapter
Organic Chemistry: Some Basic Principles and Techniques
Topic
IUPAC Nomenclature
Idea tested
Functional Group Priority

Same idea in other shifts

Asked 7× in all
  1. 2 Apr 2026, Shift 1 · Q65In IUPAC nomenclature, the correct order of decreasing priority of functional group is :EasySingle correct
  2. 7 Apr 2025, Shift 1 · Q65Which of the following is the correct IUPAC name of given organic compound (X)?EasySingle correctHas a figure
  3. 5 Apr 2024, Shift 2 · Q73The correct nomenclature for the following compound is :MediumDiagram basedHas a figure
  4. 31 Jan 2024, Shift 1 · Q75Given below are two statements: Statement I: IUPAC name of HO−CH2−(CH2)3−CH2−COCH3\mathrm{HO-CH_2-(CH_2)_3-CH_2-COCH_3} is 7-hydroxyheptan-2-one. Statement II:…EasyTwo statements
  5. 8 Apr 2023, Shift 2 · Q72The correct IUPAC nomenclature for the following compound is: [structure: CH3−CO−CH2−CH2−CH(COOH)−CH3\mathrm{CH_3{-}CO{-}CH_2{-}CH_2{-}CH(COOH){-}CH_3}]EasySingle correctHas a figure
  6. 2 Sep 2020, Shift 1 · Q39The IUPAC name for the following compound is :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 108 of the 174 JEE Main shifts held from 2017 to 2026.