Peptization denotes

In the process of peptization,......

Which of the following anions has the lowest coagulating power for the precipitation of a positive sol?

Which of the following ionic species has the highest precipitating power?

Which of the following can form a colloidal sol with water?

Molar conductivity $\left(\Lambda_m\right)$ of an aqueous solution of sodium stearate,which behaves as a strong electrolyte,is recorded at varying concentrations $(c)$ of sodium stearate. Which one of the following plots provides the correct representation of micelle formation in the solution? (Critical micelle concentration $(CMC)$ is marked with an arrow in the figures.)