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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceDiagram basedEasyConceptual

JEE Main 29 July 2022, Shift 1, Chemistry Q80

Question 80 of 90 in this shift, Chemistry question 20 of 30, Section A.

A compound ‘X’ is acidic and it is soluble in NaOH solution, but insoluble in NaHCO3\mathrm{NaHCO_3} solution. Compound ‘X’ also gives violet colour with neutral FeCl3\mathrm{FeCl_3} solution. The compound ‘X’ is :

The figure, in words

Options are cyclohexanol, phenol, benzyl alcohol and cyclohexylmethanol drawn as skeletal structures.
  1. (1)[figure: cyclohexanol, cyclohexane ring bearing OH]
  2. (2)[figure: phenol, benzene ring bearing OH]Official answer
  3. (3)[figure: benzyl alcohol, benzene ring bearing CH2OH\mathrm{CH_2OH}]
  4. (4)[figure: cyclohexylmethanol, cyclohexane ring bearing CH2OH\mathrm{CH_2OH}]

Official answer

Option 2

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. 25 Jul 2022, Shift 2 · Q75Arrange the following in decreasing acidic strength. (A) [figure: benzene ring with OH and NO2 para to each other] (B) [figure: benzene…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.