Which is not the property of hydrophilic sols ?

Options

A. High concentration of dispered phase can be easily attained
B. Coagulation is reversible
C. The charge of the particle depends upon the pH values of the dispersion medium. It may be positive or negative
D. Viscosity and that surface tension are about the same as of dispersion medium.

Answer

D

Explanation

Viscosity of hydrophilic sol is much higher than dispersion medium while surface tension of the sol is much lesser than water. This is attributed to the higher concentration of the sol itself.