The surface tension of a lyophilic sol is ............

Alum purifies muddy water by

According to the Hardy-Schulze rule,the flocculating power of an ion increases with:

When an excess of $AgNO_3$ solution is added to a $KI$ solution,a sol is formed. The colloidal particles will carry which type of charge?

Which of the following is used for the destruction of colloids?

The correct statements about the properties of colloidal solutions are:
$A$. Tyndall effect is used to distinguish between a colloidal solution and a true solution
$B$. Zeta potential is related to movement of colloidal particles
$C$. Brownian motion in colloidal solution is faster if the viscosity of the solution is very high.
$D$. Brownian motion stabilises the sols