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Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceDiagram basedMediumConceptual

JEE Main 24 February 2021, Shift 1, Chemistry Q46

Question 46 of 90 in this shift, Chemistry question 16 of 30, Section A.

In the following reaction the reason why meta-nitro product also formed is :

The figure, in words

Benzene ring with NH2, arrow labelled Conc. HNO3 / Conc. H2SO4, 288 K, giving three products, each a benzene ring with NH2 (drawn at the top) and NO2: [A] NO2 on the ring carbon directly opposite NH2, 51%; [B] NO2 on the lower right ring carbon (two ring bonds from the NH2 carbon), 47%; [C] NO2 on the upper right ring carbon adjacent to the NH2 carbon, 2%.
  1. (1)−NH2-\mathrm{NH_2} group is highly meta-directive
  2. (2)−NO2-\mathrm{NO_2} substitution always takes place at meta-position
  3. (3)Formation of anilinium ionOfficial answer
  4. (4)low temperature

Official answer

Option 3

NTA final key.

Chapter
Amines
Topic
Amines
Idea tested
Direct Nitration of Aniline

Same idea in other shifts

Asked 4× in all
  1. 28 Jul 2022, Shift 2 · Q45Given below are two statements : one is labelled as **Assertion A** and the other is labelled as **Reason R** **Assertion A** : Aniline on…MediumAssertion–reason
  2. 28 Jun 2022, Shift 2 · Q77With respect to the following reaction, consider the given statements : [reaction: aniline (benzene ring with NH2\mathrm{NH_2})…MediumOtherHas a figure
  3. 25 Feb 2021, Shift 2 · Q47[figure: benzene ring with NH2\mathrm{NH_2} →288 KHNO3, H2SO4\xrightarrow[288\ \mathrm{K}]{\mathrm{HNO_3,\ H_2SO_4}} (A) + (B) + (C)] Correct statement…MediumOtherHas 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.