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Saturday, 31 October

JEE Main · Chemistry · Alcohols, Phenols and Ethers

Alcohol Dehydration Ease

JEE Main asked Alcohol Dehydration Ease 7 times in 7 of the 108 shifts Lumi analysed, in 2020, 2021, 2022, 2023, 2024 and 2026. It belongs to Alcohols and Phenols, in Alcohols, Phenols and Ethers (Chemistry). The longest wait between two years asking it was 2 years. In 2021 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
7
in 7 shifts
Years
6 of 8
First asked
2020
last in 2026
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2021, 2022, 2023, 2024 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.10.20’170.08’200.07’210.03’220.07’230.05’240’250.11’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 2 in 24 shifts · 2022: 1 in 24 shifts · 2023: 1 in 12 shifts · 2024: 1 in 18 shifts · 2025: 0 in 8 shifts · 2026: 1 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20261 of 9
  • 20250 of 8
  • 20241 of 18
  • 20231 of 12
  • 20221 of 24
  • 20212 of 24
  • 20201 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Diagram based is the usual form. Skill tested: application.

  • Predict product of reaction
  • Predict product of reaction sequence

Difficulty

Easy 2Medium 5Hard 0

1 of the 7 questions had a numerical answer.

Every question

All 7 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 5 Apr 2026, Shift 1 · Q67Consider compounds A, B and C with following structural formulae A = CH3−CH2−CH2−CH2−CH2−OH\mathrm{CH_3-CH_2-CH_2-CH_2-CH_2-OH} B =…EasyOtherHas a figure
  2. 8 Apr 2024, Shift 1 · Q78Identify the major products A and B respectively in the following set of reactions. [figure: 1-methylcyclohexan-1-ol (ring carbon bearing…MediumDiagram basedHas a figure
  3. 13 Apr 2023, Shift 1 · Q89For the given reaction CH3−C(CH3)(CH3)−CH(OH)−C(H)(CH3)−CH3→ΔH+\mathrm{CH_3-C(CH_3)(CH_3)-CH(OH)-C(H)(CH_3)-CH_3}\xrightarrow[\Delta]{H^+} (the carbon bearing OH is labelled…MediumNumerical valueHas a figure
  4. 29 Jul 2022, Shift 2 · Q76When enthanol is heated with conc. H2SO4\mathrm{H_2SO_4}, a gas is produced. The compound formed, when this gas is treated with cold dilute…EasySingle correct
  5. 31 Aug 2021, Shift 1 · Q46The major product formed in the following reaction is :MediumDiagram basedHas a figure
  6. 4 Aug 2021, Shift 2 · Q41In the reaction given below, [reaction scheme: drawn structure → A + B, see figure_note] the products A and B formed areMediumDiagram basedHas a figure
  7. 4 Sep 2020, Shift 1 · Q44When neopentyl alcohol is heated with an acid, it slowly converted into an 85 : 15 mixture of alkenes A and B, respectively. What are…MediumDiagram basedHas a figure

Shifts: 4 Sep 2020, Shift 1, 4 Aug 2021, Shift 2, 31 Aug 2021, Shift 1, 29 Jul 2022, Shift 2, 13 Apr 2023, Shift 1, 8 Apr 2024, Shift 1, 5 Apr 2026, Shift 1.

Same topic

Other ideas in Alcohols and Phenols

Alcohols and Phenols has 26 ideas JEE Main has asked; 13 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas