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Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceDiagram basedMediumApplication

JEE Main 3 August 2021, Shift 1, Chemistry Q45

Question 45 of 90 in this shift, Chemistry question 15 of 30, Section A.

Product [A] obtained in the following transformation is

The figure, in words

Benzene ring with OH at top with arrow; reagents printed '1) conc. H2SO4' and '2) very dilute HNO3'; product labelled [A].
  1. (1)[figure: benzene ring with OH and, at the adjacent (ortho) position, NO2]
  2. (2)[figure: benzene ring with OH, NO2 at the ortho position and SO3H at the para position]
  3. (3)[figure: benzene ring with OH, SO3H at the ortho position and SO3H at the para position]Official answer
  4. (4)[figure: benzene ring with OH, NO2 at the ortho position and NO2 at the para position]

Official answer

Option 3

NTA final key.

Chapter
Alcohols, Phenols and Ethers
Topic
Alcohols and Phenols
Idea tested
Concentration-Dependent Phenol Nitration

Same topic in other shifts

All Alcohols and Phenols questions
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  2. 4 Apr 2026, Shift 2 · Q70Match the LIST-I with LIST-II List-I (Compound): A. [figure: cyclohexane ring bearing OH] B. [figure: cyclohexane ring bearing NH2] C.…MediumMatch the listHas a figure
  3. 5 Apr 2026, Shift 1 · Q67Consider compounds A, B and C with following structural formulae A = CH3−CH2−CH2−CH2−CH2−OH\mathrm{CH_3-CH_2-CH_2-CH_2-CH_2-OH} B =…EasyOtherHas a figure
  4. 5 Apr 2026, Shift 1 · Q73One mole of phenol is treated with dilute HNO3\mathrm{HNO_3} at 298 K to give a mixture of products. The mixture is separated by steam…MediumNumerical value
  5. 6 Apr 2026, Shift 1 · Q734.7 g of phenol is heated with Zn to give product X. If this reaction goes to 60% completion then the number of moles of compound X formed…EasyNumerical value
  6. 3 Apr 2025, Shift 1 · Q68Number of molecules from below which cannot give iodoform reaction is: Ethanol, Isopropyl alcohol, Bromoacetone, 2−-Butanol,…MediumSingle correct

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.