JEE Main 2021 · ChemistryMultiple choiceMatch the listMediumConceptual

JEE Main 26 February 2021, Shift 2, Chemistry Q31

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

Match List-I with List-II. List-I (Molecule) | List-II (Bond order) (a)

\mathrm{Ne_2}

| (i) 1 (b)

\mathrm{N_2}

| (ii) 2 (c)

\mathrm{F_2}

| (iii) 0 (d)

\mathrm{O_2}

| (iv) 3 Choose the correct answer from the options given below :

(1)(a) $\rightarrow$ (i), (b) $\rightarrow$ (ii), (c) $\rightarrow$ (iii), (d) $\rightarrow$ (iv)
(2)(a) $\rightarrow$ (iv), (b) $\rightarrow$ (iii), (c) $\rightarrow$ (ii), (d) $\rightarrow$ (i)
(3)(a) $\rightarrow$ (ii), (b) $\rightarrow$ (i), (c) $\rightarrow$ (iv), (d) $\rightarrow$ (iii)
(4)(a) $\rightarrow$ (iii), (b) $\rightarrow$ (iv), (c) $\rightarrow$ (i), (d) $\rightarrow$ (ii)Official answer

Official answer

Option 4

NTA final key.

Chapter: Chemical Bonding and Molecular Structure
Topic: Molecular Orbital Theory
Idea tested: Bond Order Calculation

Same idea in other shifts

Asked 11× in all

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.