$A$ precipitate is changed to a colloidal solution by the following process:

The most effective coagulating agent among the options for $Sb_2S_3$ sol is

Lyophilic sols are more stable than lyophobic sols because their particles are

Gold numbers of some colloids are: Gelatin $0.005-0.01$,Gum arabic: $0.15-0.25$; Oleate: $0.04-1.0$; Starch: $15-25$. Which among these is a better protective colloid?

Oils and fats are obtained by saponification of potassium stearate. Its formula is $CH_3(CH_2)_{16}COO^-K^+$. The hydrophobic end of the molecule is $CH_3(CH_2)_{16}$ and the hydrophilic end is $COO^-K^+$. Potassium stearate is an example of:

The amount of electrolytes required to coagulate a given amount of $AgI$ colloidal solution ($-ve$ charge) will be in the order: