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Saturday, 31 October

JEE Main 2020 · ChemistryMultiple choiceOtherMediumConceptual

JEE Main 2 September 2020, Shift 2, Chemistry Q28

Question 28 of 75 in this shift, Chemistry question 3 of 25.

Amongst the following statements regarding adsorption, those that are valid are : (a) Δ\DeltaH becomes less negative as adsorption proceeds. (b) On a given adsorbent, ammonia is adsorbed more than nitrogen gas. (c) On adsorption, the residual force acting along the surface of the adsorbent increases. (d) With increase in temperature, the equilibrium concentration of adsorbate increases.
  1. (1)(a) and (b)Official answer
  2. (2)(b) and (c)
  3. (3)(c) and (d)
  4. (4)(d) and (a)

Official answer

Option 1

NTA final key (Sep 2020).

Chapter
Surface Chemistry
Topic
Adsorption
Idea tested
Physisorption vs Chemisorption

Same topic in other shifts

All Adsorption questions
  1. 4 Apr 2024, Shift 2 · Q73The adsorbent used in adsorption chromatography is/are - A. silica gel B. alumina C. quick lime D. magnesia Choose the most appropriate…EasyOther
  2. 6 Apr 2024, Shift 2 · Q73The correct statement among the following, for a "chromatography" purification method is :MediumSingle correct
  3. 31 Jan 2024, Shift 1 · Q71'Adsorption' principle is used for which of the following purification method?EasySingle correct
  4. 6 Apr 2023, Shift 2 · Q76From the figure of column chromatography given below, identify incorrect statements. A. Compound 'c' is more polar than 'a' and 'b' B.…MediumOtherHas a figure
  5. 8 Apr 2023, Shift 1 · Q63Which of the following represent the Freundlich adsorption isotherms? A. [graph: xm\frac{x}{m} vs pp] B. [graph: log⁡xm\log\frac{x}{m} vs…MediumDiagram basedHas a figure
  6. 10 Apr 2023, Shift 1 · Q63The enthalpy change for the adsorption process and micelle formation respectively areMediumSingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.