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Saturday, 31 October

JEE Main 2020 · ChemistryMultiple choiceMatch the listEasyRecall

JEE Main 4 September 2020, Shift 1, Chemistry Q26

Question 26 of 75 in this shift, Chemistry question 1 of 25.

Match the following : (i) Foam (a) smoke (ii) Gel (b) cell fluid (iii) Aerosol (c) jellies (iv) Emulsion (d) rubber (e) froth (f) milk
  1. (1)(i)-(e), (ii)-(c), (iii)-(a), (iv)-(f)Official answer
  2. (2)(i)-(b), (ii)-(c), (iii)-(e), (iv)-(d)
  3. (3)(i)-(d), (ii)-(b), (iii)-(e), (iv)-(f)
  4. (4)(i)-(d), (ii)-(b), (iii)-(a), (iv)-(e)

Official answer

Option 1

NTA final key (Sep 2020).

Chapter
Surface Chemistry
Topic
Colloids
Idea tested
Colloid Classification by State

Same idea in other shifts

Asked 6× in all
  1. 6 Apr 2023, Shift 2 · Q87The number of colloidal systems from the following, which will have 'liquid' as the dispersion medium, is ______________. Gem stones,…MediumNumerical value
  2. 27 Jun 2022, Shift 1 · Q64Match List - I with List - II. List - I (A) Lyophilic colloid (B) Emulsion (C) Positively charged colloid (D) Negatively charged colloid…EasyMatch the list
  3. 4 Aug 2021, Shift 2 · Q31Match List-I with List-II : List-I : Examples of Colloids A. Paints B. Hair cream C. Whipped cream D. Cheese List-II : Type of Colloid I.…EasyMatch the listHas a figure
  4. 25 Jul 2021, Shift 2 · Q33Match List I with List II : List - I Example of Colloids (a) Cheese (b) Pumice stone (c) Hair cream (d) Cloud List - II Classification (i)…EasyMatch the list
  5. 17 Mar 2021, Shift 1 · Q32A colloidal system consisting of a gas dispersed in a solid is called a/an :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.