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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceDiagram basedEasyConceptual

JEE Main 25 July 2022, Shift 2, Chemistry Q75

Question 75 of 90 in this shift, Chemistry question 15 of 30, Section A.

Arrange the following in decreasing acidic strength. (A) [figure: benzene ring with OH and NO2 para to each other] (B) [figure: benzene ring with OH and NO2 meta to each other] (C) [figure: benzene ring with OH and OCH3 meta to each other] (D) [figure: benzene ring with OH and OCH3 para to each other]

The figure, in words

Four substituted phenols drawn as hexagons with OH at top: (A) NO2 at the bottom (para), (B) NO2 at lower right (meta), (C) OCH3 at lower right (meta), (D) OCH3 at bottom (para).
  1. (1)A > B > C > DOfficial answer
  2. (2)B > A > C > D
  3. (3)D > C > A > B
  4. (4)D > C > B > A

Official answer

Option 1

NTA final key.

Chapter
Alcohols, Phenols and Ethers
Topic
Alcohols and Phenols
Idea tested
Phenol Acidity Comparison

Same idea in other shifts

Asked 8× in all
  1. 8 Apr 2024, Shift 2 · Q78Which one the following compounds will readily react with dilute NaOH ?EasySingle correct
  2. 9 Apr 2024, Shift 1 · Q77For the given compounds, the correct order of increasing pKa\mathrm{pK_a} value : (A) phenol (B) 4-nitrophenol (O2N\mathrm{O_2N} and OH para…MediumSingle correctHas a figure
  3. 27 Jan 2024, Shift 1 · Q74Given below are two statements : Statement (I) : p-nitrophenol is more acidic than m-nitrophenol and o-nitrophenol. Statement (II) :…EasyTwo statements
  4. 6 Apr 2023, Shift 2 · Q78The strongest acid from the following isEasyDiagram basedHas a figure
  5. 13 Apr 2023, Shift 2 · Q76Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Order of acidic nature…MediumAssertion–reasonHas a figure
  6. 29 Jul 2022, Shift 1 · Q80A compound ‘X’ is acidic and it is soluble in NaOH solution, but insoluble in NaHCO3\mathrm{NaHCO_3} solution. Compound ‘X’ also gives violet…EasyDiagram basedHas a figure
  7. 29 Jun 2022, Shift 1 · Q80Given below are two statements. Statement I : Phenols are weakly acidic. Statement II : Therefore they are freely soluble in NaOH solution…EasyTwo statements

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.