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Saturday, 31 October

JEE Main · Chemistry · Alcohols, Phenols and Ethers

Hydroboration-Oxidation

JEE Main asked Hydroboration-Oxidation 6 times in 6 of the 108 shifts Lumi analysed, in 2020, 2022, 2023 and 2024. It belongs to Alkenes and Alkynes, in Alcohols, Phenols and Ethers (Chemistry). The longest wait between two years asking it was 2 years. In 2023 and 2024 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
6
in 6 shifts
Years
4 of 8
First asked
2020
last in 2024
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

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

00.10.20’170.08’200’210.03’220.14’230.09’240’250’26

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

Shift by shift

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

  • 20260 of 9
  • 20250 of 8
  • 20242 of 18
  • 20232 of 12
  • 20221 of 24
  • 20210 of 24
  • 20201 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: multi-step.

  • Predict product of reaction
  • Propene hydration vs hydroboration products

Difficulty

Easy 3Medium 3Hard 0

Every question was multiple choice.

Every question

All 6 questions

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

  1. 9 Apr 2024, Shift 1 · Q76Identify the product A and product B in the following set of reactions. [figure: CH3−CH=CH2\mathrm{CH_3-CH=CH_2}…EasySingle correctHas a figure
  2. 4 Apr 2024, Shift 2 · Q79CH3−CH2−CH2−Br+NaOH→C2H5OH\mathrm{CH_3-CH_2-CH_2-Br + NaOH \xrightarrow{C_2H_5OH}} Product 'A' Product A →H2O/H+\xrightarrow{\mathrm{H_2O/H^+}} Product "B" Product A…EasySingle correct
  3. 15 Apr 2023, Shift 1 · Q76The product formed in the following multistep reaction is : CH3−CH=CH2\mathrm{CH_3-CH=CH_2}…MediumOtherHas a figure
  4. 10 Apr 2023, Shift 2 · Q75Incorrect method of preparation for alcohols from the following is:EasySingle correct
  5. 24 Jun 2022, Shift 2 · Q75Which of the following reagents / reactions will convert 'A' to 'B'?MediumSingle correctHas a figure
  6. 8 Jan 2020, Shift 2 · Q45The major product [B] in the following sequence of reactions is :…MediumDiagram basedHas a figure

Shifts: 8 Jan 2020, Shift 2, 24 Jun 2022, Shift 2, 10 Apr 2023, Shift 2, 15 Apr 2023, Shift 1, 4 Apr 2024, Shift 2, 9 Apr 2024, Shift 1.

Same topic

Other ideas in Alkenes and Alkynes

Alkenes and Alkynes has 24 ideas JEE Main has asked; 14 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas