JEE Main 2021 · ChemistryMultiple choiceSingle correctEasyConceptual

JEE Main 16 March 2021, Shift 2, Chemistry Q32

Question 32 of 90 in this shift, Chemistry question 2 of 30, Section A.

The INCORRECT statements below regarding colloidal solutions is :

(1)A colloidal solution shows colligative properties.
(2)A colloidal solution shows Brownian motion of colloidal particles.
(3)The flocculating power of $\mathrm{Al^{3+}}$ is more than that of $\mathrm{Na^+}$ .
(4)An ordinary filter paper can stop the flow of colloidal particles.Official answer

Official answer

Option 4

NTA final key.

Chapter: Surface Chemistry
Topic: Colloids
Idea tested: Colligative Properties of Colloids

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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.