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Saturday, 31 October

JEE Main 2020 · ChemistryMultiple choiceSingle correctEasyConceptual

JEE Main 4 September 2020, Shift 2, Chemistry Q26

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

A sample of red ink (a colloidal suspension) is prepared by mixing eosin dye, egg white, HCHO and water. The component which ensures stability of the ink sample is :
  1. (1)Eosin dye
  2. (2)Egg whiteOfficial answer
  3. (3)HCHO
  4. (4)Water

Official answer

Option 2

NTA final key (Sep 2020).

Chapter
Surface Chemistry
Topic
Colloids
Idea tested
Protective Colloids and Gold Number

Same topic in other shifts

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  6. 15 Apr 2023, Shift 1 · Q8620 mL of 0.5 M NaCl is required to coagulate 200 mL of As2S3\mathrm{As_2S_3} solution in 2 hours. The coagulating value of NaCl is __________.EasyNumerical value

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.