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

What is the difference between distillation,distillation under reduced pressure,and steam distillation?

From the figure of column chromatography given below,identify the incorrect statements.
$A.$ Compound '$c$' is more polar than '$a$' and '$b$'
$B.$ Compound '$a$' is least polar
$C.$ Compound '$b$' comes out of the column before '$c$' and after '$a$'
$D.$ Compound '$a$' spends more time in the column
Choose the correct answer from the options given below :-

Explain why an organic liquid vaporizes at a temperature below its boiling point during steam distillation.

Explain the process of fractional distillation.

Which among the following purification methods is based on the principle of "Solubility" in two different solvents?