Which of the following methods is used for the purification of organic compounds?

Among the following,in which type of chromatography,both stationary and mobile phases are in liquid state?

What is chromatography used for?

Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: Thin layer chromatography is an adsorption chromatography.
Reason $R$: $A$ thin layer of silica gel is spread over a glass plate of suitable size in thin layer chromatography which acts as an adsorbent.
In the light of the above statements,choose the correct answer from the options given below.

Give the information of the following in short.
$(i)$ Fractional column $(ii)$ Theoretical plate $(iii)$ Mechanism of fractional column.

$p-$nitrophenol and $o-$nitrophenol are separated by