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Friday, 9 October

JEE Main 2022 · ChemistryMultiple choiceTwo statementsMediumConceptual

JEE Main 24 June 2022, Shift 1, Chemistry Q65

Question 65 of 90 in this shift, Chemistry question 5 of 30, Section A.

Given below are two statements : Statement I : Emulsions of oil in water are unstable and sometimes they separate into two layers on standing. Statement II : For stabilisation of an emulsion, excess of electrolyte is added. In the light of the above statements, choose the most appropriate answer from the options given below :
  1. (1)Both Statement I and Statement II are correct.
  2. (2)Both Statement I and Statement II are incorrect.
  3. (3)Statement I is correct but Statement II is incorrect.Official answer
  4. (4)Statement I is incorrect but Statement II is correct.

Official answer

Option 3

NTA final key (2022 Session 1).

Chapter
Surface Chemistry
Topic
Colloids
Idea tested
Role of Emulsifying Agents

Same topic in other shifts

All Colloids questions
  1. 8 Apr 2023, Shift 2 · Q87Coagulating value of the electrolytes AlCl3\mathrm{AlCl_3} and NaCl for As2S3\mathrm{As_2S_3} are 0.09 and 50.04 respectively. The coagulating…EasyNumerical value
  2. 13 Apr 2023, Shift 2 · Q63Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : The diameter of…MediumAssertion–reason
  3. 29 Jun 2022, Shift 1 · Q65Which of the following is a correct statement ?EasySingle correct
  4. 25 Jul 2021, Shift 1 · Q32Sodium stearate CH3(CH2)16COO−Na+\mathrm{CH_3(CH_2)_{16}COO^-Na^+} is an anionic surfactant which forms micelles in oil. Choose the correct statement for…MediumSingle correct
  5. 16 Mar 2021, Shift 2 · Q32The INCORRECT statements below regarding colloidal solutions is :EasySingle correct
  6. 8 Jan 2020, Shift 1 · Q28As per Hardy-Schulze formulation, the flocculation values of the following for ferric hydroxide sol are in the order :MediumSingle 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 42 of the 174 JEE Main shifts held from 2017 to 2026.