The stability of lyophilic colloidal sol is due to

Match the following types of colloids with their examples:

Column-$I$	Column-$II$
$A$. Liquid Aerosol	$P$. Milk
$B$. Solid Sol	$Q$. Fog
$C$. Emulsion	$R$. Gel
$D$. Jelly	$S$. Alloy

How does a delta form at the meeting place of sea and river water?

The critical micelle concentration $(CMC)$ of a soap solution is $5 \times 10^{-4} \ mol \ L^{-1}$. Identify the correct statements about this solution.
$I$. The micelle is stable if the soap solution concentration is $10^{-7} \ mol \ L^{-1}$
$II$. The micelle is stable if the soap solution concentration is higher than $5 \times 10^{-4} \ mol \ L^{-1}$
$III$. Micelles are also known as associated colloids.

Nanomaterials are $NOT$ typically applied in which of the following fields?

$A$ micelle is a.......