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Friday, 9 October

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

Adsorption in JEE Main

Adsorption (Chemistry, Organic Chemistry: Some Basic Principles and Techniques) came 6 times in 6 of the 42 JEE Main shifts Lumi analysed, across 3 distinct ideas. 2 of them came in 2024–26; it was last asked in 2024.

Questions
6
in 6 shifts
Ideas asked
3
2 asked more than once
Numerical answer
3
50% of its questions
Pattern
Comes in cycles
last asked 2024
Questions each year
0240’172’201’210’221’232’240’250’26

In the shifts Lumi analysed for each year.

Difficulty and format
Easy 1Medium 5Hard 0

Format

  • Numerical value3 Q
  • Single correct2 Q
  • Diagram based1 Q
Ideas inside the topic
3 ideas
Where it sits

Part of Organic Chemistry: Some Basic Principles and Techniques, which had 91 questions in all. Adsorption accounts for 7% of them. In Lumi's JEE taxonomy it belongs to Physical Chemistry.

Some questions sit in other chapters too: Surface Chemistry.

Every question

All 6 Adsorption questions

Newest first, each with its options and official answer.

  1. 6 Apr 2024, Shift 2 · Q73The correct statement among the following, for a "chromatography" purification method is :MediumSingle correct
  2. 31 Jan 2024, Shift 1 · Q71'Adsorption' principle is used for which of the following purification method?EasySingle correct
  3. 11 Apr 2023, Shift 1 · Q72Thin layer chromatography of a mixture shows the following observation: The correct order of elution in the silica gel column…MediumDiagram basedHas a figure
  4. 3 Aug 2021, Shift 2 · Q58In an adsorption isotherm, it is seen that the graph of log⁡(xm)\log\left(\frac{x}{m}\right) vs log⁡P\log P, where PP is in atm, is a straight…MediumNumerical value
  5. 2 Sep 2020, Shift 1 · Q48The mass of gas adsorbed, xx, per unit mass of adsorbate, mm, was measured at various pressures, pp. A graph between log⁡xm\log\frac{x}{m}…MediumNumerical value
  6. 6 Sep 2020, Shift 2 · Q49For Freundlich adsorption isotherm, a plot of log⁡(x/m)\log(x/m) (yy-axis) and log⁡p\log p (xx-axis) gives a straight line. The intercept and…MediumNumerical value