Question

What is Brownian motion? Write its two examples. Show that during sedimentation, particles concentration decreases exponentially as height increases. 

19 Jan 2026
Answer :
Word Count : 263
Brownian motion is the continuous, random, and irregular motion of microscopic particles suspended in a fluid, resulting from incessant and unequal collisions with the fast-moving molecules of the surrounding medium. This motion becomes more prominent for smaller particles and at higher temperatures and provides direct experimental evidence for the molecular nature of ___ __________ _______ _________ _____ _________ ___ ____ ______.
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