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Saturday, 31 October

JEE Main 2024 · ChemistryMultiple choiceTwo statementsEasyConceptual

JEE Main 5 April 2024, Shift 1, Chemistry Q74

Question 74 of 90 in this shift, Chemistry question 14 of 30, Section A.

Given below are two statements : Statement I : Nitration of benzene involves the following step - H−O⋅⋅⊕(H)−NO2⇌H2O+N⊕O2\mathrm{H{-}\underset{\cdot\cdot}{O}^{\oplus}(H){-}NO_2 \rightleftharpoons H_2O + \overset{\oplus}{N}O_2} Statement II : Use of Lewis base promotes the electrophilic substitution of benzene. In the light of the above statements, choose the most appropriate answer from the options given below :

The figure, in words

Statement I shows protonated nitric acid: O bearing a positive charge, with H above it and an NO2 group on the right (H-O(+)(H)-NO2, lone pair on O), in equilibrium with H2O + NO2+.
  1. (1)Both Statement I and Statement II are correct
  2. (2)Both Statement I and Statement II are incorrect
  3. (3)Statement I is correct but Statement II is incorrectOfficial answer
  4. (4)Statement I is incorrect but Statement II is correct

Official answer

Option 3

NTA final key.

Chapter
Organic Chemistry: Some Basic Principles and Techniques
Topic
Aromatic Hydrocarbons
Idea tested
Nitrating Mixture and Nitronium Ion Generation

Same idea in other shifts

Asked 3× in all
  1. 3 Apr 2025, Shift 2 · Q74X g of nitrobenzene on nitration gave 4.2 g of m-dinitrobenzene. X = __________ g. (nearest integer) [Given : molar mass (in…MediumNumerical value
  2. 2 Sep 2020, Shift 2 · Q40The major product of the following reaction is : reactant (drawn structure) with the arrow labelled: conc. HNO3\mathrm{HNO_3} + conc.…MediumSingle correctHas 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.