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Saturday, 31 October

JEE Main · Chemistry · Biomolecules

Seliwanoff's Test

JEE Main asked Seliwanoff's Test 3 times in 3 of the 108 shifts Lumi analysed, in 2020 and 2021. It belongs to Carbohydrates, in Biomolecules (Chemistry). The longest wait between two years asking it was 1 year. In 2021 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
3
in 3 shifts
Years
2 of 8
First asked
2020
last in 2021
Pattern
Gone quiet
across the analysed shifts

Questions on this idea a shift, by year

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

00.050.10’170.08’200.07’210’220’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 2 in 24 shifts · 2022: 0 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 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
  • 20240 of 18
  • 20230 of 12
  • 20220 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

Single correct is the usual form. Skill tested: recall.

  • Odd-one-out among identification tests
  • Statements on seliwanoff and xanthoproteic tests

Difficulty

Easy 1Medium 2Hard 0

Every question was multiple choice.

Every question

All 3 questions

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

  1. 26 Feb 2021, Shift 2 · Q47Seliwanoff test and Xanthoproteic test are used for the identification of __________ and __________ respectively.MediumSingle correct
  2. 27 Aug 2021, Shift 2 · Q40Which one of the following tests used for the identification of functional groups in organic compounds does not use copper reagent ?MediumSingle correct
  3. 2 Sep 2020, Shift 2 · Q41The correct observation in the following reactions is :…EasySingle correct

Shifts: 2 Sep 2020, Shift 2, 26 Feb 2021, Shift 2, 27 Aug 2021, Shift 2.

Same topic

Other ideas in Carbohydrates

Carbohydrates has 25 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