Which of the following electrolytes is least effective in causing flocculation of ferric hydroxide sol?

Which of the following is lyophobic in nature?

An example of a solid sol is

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.)

In general,for soaps,the concentration of surfactant at $CMC$ is around $mol \ L^{-1}$.

Which of the following has the minimum flocculation value for a positively charged sol?