The coagulation power of an electrolyte for arsenious sulphide sol decreases in the order:

At the isoelectric point,the concentration of $H^+$ ions in colloidal particles is such that the particles:

Why is gelatin used in the preparation of ice cream?

When a dilute $AgNO_3$ solution is mixed with excess of dilute $KI$,the colloidal solution formed is

The critical micelle concentration $(CMC)$ of a soap solution is $5 \times 10^{-4} \ mol \ L^{-1}$. Identify the correct statements about this solution.
$I$. The micelle is stable if the soap solution concentration is $10^{-7} \ mol \ L^{-1}$
$II$. The micelle is stable if the soap solution concentration is higher than $5 \times 10^{-4} \ mol \ L^{-1}$
$III$. Micelles are also known as associated colloids.

At high concentration of soap in water,soap behaves as a