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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 29 July 2022, Shift 1, Chemistry Q63

Question 63 of 90 in this shift, Chemistry question 3 of 30, Section A.

100 mL of 5% (w/v) solution of NaCl in water was prepared in 250 mL beaker. Albumin from the egg was poured into NaCl solution and stirred well. This resulted in a/an :
  1. (1)Lyophilic solOfficial answer
  2. (2)Lyophobic sol
  3. (3)Emulsion
  4. (4)Precipitate

Official answer

Option 1

NTA final key.

Chapter
Surface Chemistry
Topic
Colloids
Idea tested
Lyophilic and Lyophobic Sols

Same idea in other shifts

Asked 5× in all
  1. 13 Apr 2023, Shift 1 · Q63What happens when a lyophilic sol is added to a lyophobic sol?EasySingle correct
  2. 29 Jun 2022, Shift 1 · Q65Which of the following is a correct statement ?EasySingle correct
  3. 27 Aug 2021, Shift 2 · Q31Lyophilic sols are more stable than lyophobic sols because,EasySingle correct
  4. 25 Feb 2021, Shift 2 · Q33Which one of the following statements is FALSE for hydrophilic sols ?EasySingle 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.