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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceMatch the listEasyRecall

JEE Main 27 July 2022, Shift 2, Chemistry Q62

Question 62 of 90 in this shift, Chemistry question 2 of 30, Section A.

Match **List - I** with **List - II**. List - I (A) ψMO=ψA−ψB\psi_{MO}=\psi_A-\psi_B (B) μ=Q×r\mu=Q\times r (C) Nb−Na2\frac{N_b-N_a}{2} (D) ψMO=ψA+ψB\psi_{MO}=\psi_A+\psi_B List - II (I) Dipole moment (II) Bonding molecular orbital (III) Anti-bonding molecular orbital (IV) Bond order Choose the **correct** answer from the options given below :
  1. (1)(A) - (II), (B) - (I), (C) - (IV), (D) - (III)
  2. (2)(A) - (III), (B) - (IV), (C) - (I), (D) - (II)
  3. (3)(A) - (III), (B) - (I), (C) - (IV), (D) - (II)Official answer
  4. (4)(A) - (III), (B) - (IV), (C) - (II), (D) - (I)

Official answer

Option 3

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
  1. 8 Apr 2024, Shift 2 · Q83Number of molecules having bond order 2 from the following molecules is ________. C2\mathrm{C_2}, O2\mathrm{O_2}, Be2\mathrm{Be_2},…MediumNumerical value
  2. 29 Jan 2024, Shift 1 · Q82The number of species from the following which are paramagnetic and with bond order equal to one is ________.…MediumNumerical value
  3. 27 Jul 2022, Shift 1 · Q85According to MO theory, number of species/ions from the following having identical bond order is__.…MediumNumerical value
  4. 30 Jul 2022, Shift 2 · Q52On the basis of MO. theory, the number of molecules from the following which have bond order two, is ________. O2\mathrm{O_2},…MediumNumerical value
  5. 24 Jun 2022, Shift 2 · Q63The correct order of bond orders of C22−_2^{2-}, N22−_2^{2-} and O22−_2^{2-} is, respectivelyMediumSingle correct
  6. 25 Jun 2022, Shift 1 · Q61Bonding in which of the following diatomic molecule(s) become(s) stronger, on the basis of MO Theory, by removal of an electron ? (A)…MediumOther
  7. 4 Aug 2021, Shift 2 · Q54The bond order in NO+\mathrm{NO^+} is ________ . ( integer answer)EasyNumerical value
  8. 25 Feb 2021, Shift 1 · Q32According to molecular orbital theory, the species among the following that does not exist is :MediumSingle correct

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.