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

What is the alum used for the purification of water?

In an electrophoresis setup,a colloidal solution of glycine having a $pH$ of $5.97$ is kept at constant $T$ and $P$. What will happen if a few drops of base are added to it?

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.

Which of the following is an example of multimolecular colloids?

Assertion $(A)$: The aggregate of carboxylate ions of fatty acids form a spherical shape. Reason $(R)$: Soap helps in emulsification and washing away of oils.