Q.

The cause of Brownian movement is

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a

Heat changes in liquid

b

Conventional currents

c

The impact of molecules of the dispersion medium on the colloidal particles

d

Attractive forces between the colloidal particles and molecules of dispersion medium

answer is C.

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Detailed Solution

The cause of Brownian movement is impact of molecules of dispersion medium on colloidal particles. Brownian motion or pedesis is the random motion of particles suspended in a fluid (a liquid or a gas) resulting from their collision with the fast-moving atoms or molecules in the gas or liquid

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