The coagulation value is expressed in the units of ..............

Statement $I:$ For colloidal particles,the values of colligative properties are of small order as compared to values shown by true solutions at the same concentration.
Statement $II:$ For colloidal particles,the potential difference between the fixed layer and the diffused layer of opposite charges is called the electrokinetic potential or zeta potential.
In the light of the above statements,choose the correct answer from the options given below.

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

How will you distinguish between dispersed phase and dispersion medium in an emulsion?

For micelle formation,which of the following statements are correct?
$A$. Micelle formation is an exothermic process.
$B$. Micelle formation is an endothermic process.
$C$. The entropy change is positive.
$D$. The entropy change is negative.

What is the cause of the Tyndall effect in a colloidal solution?