JEE Main 2021 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 17 March 2021, Shift 2, Chemistry Q31

Question 31 of 90 in this shift, Chemistry question 1 of 30, Section A.

Amongst the following, the linear species is :

(1) $\mathrm{N_3^-}$ Official answer
(2) $\mathrm{NO_2}$
(3) $\mathrm{O_3}$
(4) $\mathrm{Cl_2O}$

Official answer

Option 1

NTA final key.

Chapter: Chemical Bonding and Molecular Structure
Topic: VSEPR Theory
Idea tested: Steric Number 2 Geometry

Same topic in other shifts

All VSEPR Theory questions

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6 Apr 2026, Shift 1 · Q54The pairs among $\mathrm{A}=\left[\mathrm{SO_3^{2-},CO_3^{2-}}\right]$ , $\mathrm{B}=\left[\mathrm{O_2^{2-},F_2}\right]$ ,…MediumSingle correct
6 Apr 2026, Shift 2 · Q53Given below are two statements : Statement I : The number of compounds among $\mathrm{SO_2}$ , $\mathrm{SO_3}$ , $\mathrm{SF_4}$ ,…HardTwo statements
6 Apr 2026, Shift 2 · Q59Given below are two statements : Statement I : $\mathrm{F_2O<H_2O<Cl_2O}$ is the correct trend in terms of bond angle. Statement II :…MediumTwo 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. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.