JEE Main 2022 · 29 Jun · Shift 1 · Chemistry Q65

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ChemistrySingle correct+4 / -1Question 65 of 90

Which of the following is a correct statement ?

Brownian motion destabilises sols.

Any amount of dispersed phase can be added to emulsion without destabilising it.

Mixing two oppositely charged sols in equal amount neutralises charges and stabilises colloids.

Presence of equal and similar charges on colloidal particles provides stability to the colloidal solution.

Answer and worked solution

Official answer: D

Like charges repel and keep colloidal particles apart. Brownian motion stabilises sols; excess dispersed phase breaks emulsions; mixing opposite sols coagulates them.

(D)

Topics:Colloids

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JEE Main 2022 · 29 Jun · Shift 1, Chemistry question 65