Small liquid droplets dispersed in another liquid is called

Among the electrolytes $Na_2SO_4$,$CaCl_2$,$Al_2(SO_4)_3$,and $NH_4Cl$,the most effective coagulating agent for $Sb_2S_3$ sol is

$A$ colloidal solution is subjected to an electric field,and the colloidal particles move towards the anode. The amount of electrolytes $BaCl_{2}$,$AlCl_{3}$,and $NaCl$ required to coagulate the given colloid is in the order:

What are micelles? Give an example of a micellar system.

Most suitable salt which can be used for efficient clotting of blood will be :-

Alum helps in purifying water by