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Saturday, 10 October

JEE Main Chemistry · Organic Chemistry: Some Basic Principles and Techniques

Mesomeric Effect

Mesomeric Effect (Organic Chemistry: Some Basic Principles and Techniques) was asked 6 times in 6 JEE Main shifts, 2020–2026, out of the 42 shifts Lumi analysed. 1 of the 6 had a numerical answer.

Times asked
6
in 6 shifts
Years
2020–2026
Usual format
Single correct
Conceptual
Pattern
Frequent
repeats across shifts

How it is asked

  • Statement i/ii on mesomeric effect
  • Order/ranking of bond lengths in a structure

Difficulty

Easy 1Medium 5Hard 0

Where it sits

Chapter: Organic Chemistry: Some Basic Principles and Techniques. Topic: Resonance and Hyperconjugation, 15 questions over 6 ideas.

Other repeat ideas in this topic

Every time it came

All 6 questions

Newest first, each with its options and official answer.

  1. 2 Apr 2026, Shift 2 · Q63Given below are two statements: Statement I: In…MediumSingle correct
  2. 6 Apr 2026, Shift 2 · Q63Shown below is the structure of methyl acetate with three different α\alpha, β\beta and γ\gamma carbon - oxygen bonds. The correct…MediumDiagram basedHas a figure
  3. 9 Apr 2024, Shift 1 · Q89How many compounds among the following compounds show inductive, mesomeric as well as hyperconjugation effects ? [figure: eight…MediumNumerical valueHas a figure
  4. 29 Jan 2024, Shift 1 · Q72The interaction between π\pi bond and lone pair of electrons present on an adjacent atom is responsible forEasySingle correct
  5. 8 Jan 2020, Shift 1 · Q41Arrange the following compounds in increasing order of C−-OH bond length : methanol, phenol, p-ethoxyphenolMediumSingle correct
  6. 9 Jan 2020, Shift 2 · Q40Which of the following has the shortest C-Cl bond ?MediumSingle correct