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Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceDiagram basedEasyConceptual

JEE Main 25 July 2021, Shift 2, Chemistry Q43

Question 43 of 90 in this shift, Chemistry question 13 of 30, Section A.

The correct decreasing order of densities of the following compounds is : [figure: four drawn structures labelled (A), (B), (C), (D)]

The figure, in words

Four benzene rings drawn side by side, labelled (A) to (D) as printed. (A): benzene ring with no substituent. (B): ring with one Cl at the upper-right vertex. (C): ring with Cl at the top vertex and a second Cl at the lower-right vertex. (D): ring with Br at the top vertex and Cl at the lower-right vertex.
  1. (1)(D) > (C) > (B) > (A)Official answer
  2. (2)(C) > (B) > (A) > (D)
  3. (3)(A) > (B) > (C) > (D)
  4. (4)(C) > (D) > (A) > (B)

Official answer

Option 1

NTA final key.

Chapter
Haloalkanes and Haloarenes
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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.