Question

What is Brownian movement?In which of the following solutions,Brownian movement is observed? a)Dust particles suspended in air b)Sodium chloride solution

Answer 1

Brownian motion is the swift movement of microscopic particles suspended in the fluid (basically liquid or gas), where all the particles randomly move, leading to a collision with the molecules or atoms of the surrounding medium. This is observed in the (a) situation. So dust particles suspended in air is a good example which exhibits the Brownian concept.  

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Answer 2

Answer:

The phenomenon by which the colloidal particles are in continuous motion is called BROWNIAN MOVEMENT. BROWNIAN movement was named after Robert brown a biologist. He observed the motion of the particles in suspension of pollen grains in water.

Dust particles suspended in ais shows brownian movement