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Why do particles in a colloid generally not settle?

Answer and explanation

Correct answer: Because their small size and continuous collisions with molecules of the medium keep them dispersed

Colloidal particles are very small and undergo continuous collisions with molecules of the dispersion medium. This Brownian motion helps them remain dispersed instead of settling under gravity. Small size alone is not the complete reason; continuous random motion also contributes to colloidal stability. Exam tip: Associate the non-settling nature of colloids with Brownian motion.

Related tags

ColloidBrownian MotionDispersion MediumParticle SizeNature Of MatterSome Basic Concepts Of ChemistryChemistryClass 11 Mcq

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