$A$ colloidal system consists of .....

What is the colloidal solution of gelatin known as?

Gold number of a lyophilic sol is such a property that:

Mixing of positively charged colloidal solution with negatively charged colloidal solution brings $ . . . . . . $. The decreasing order of coagulating power of $Na^{+}$,$Ba^{2+}$ and $Al^{3+}$ for negatively charged colloidal solution is $ . . . . . . $?

Give information about the applications of colloids.

The stabilisation of a lyophobic colloid is due to