(D) The incorrect statement is given in option $(D)$. Brownian movement is caused by the unbalanced bombardment of molecules of the dispersion medium

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Brownian movement is due to balanced bombardment of molecules of the dispersion medium on colloidal particles.

(D) The incorrect statement is given in option $(D)$. Brownian movement is caused by the unbalanced bombardment of molecules of the dispersion medium on the colloidal particles,which results in a zig-zag motion. Therefore,the statement claiming it is due to balanced bombardment is incorrect.

Class 12 Chemistry Surface Chemistry Colloids, Emulsion, Gel and Their properties with application

Easy

Identify the incorrect statement.

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A
Values of colligative properties of colloidal solutions are of small order compared to values of true solutions.
B
Tyndall effect is observed only when the diameter of the dispersed particles is not much smaller than the wavelength of the incident light.
C
The colour of a colloidal solution depends on the wavelength of light scattered by the dispersed particles.
D
Brownian movement is due to balanced bombardment of molecules of the dispersion medium on colloidal particles.