When excess of electrolyte is added to a colloid,it

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?

Gold number is minimum in the case of

Identify the incorrect statement.

The trend in the coagulating power for the same concentration of $BaCl_2$,$MgCl_2$,and $NaCl$,respectively,is

$100 \, cm^3$ of gold sol requires $10^{-4} \, g$ of gelatin to prevent coagulation when $1 \, cm^3$ of $10 \% \, NaCl$ solution is added. The gold number of gelatin is ............ .