On the basis of which physical property does the separation of different fractions in the fractional distillation technique take place?

$A$ miscible mixture of $C_6H_6 + CHCl_3$ can be separated by

What are the macroscopic properties of matter?

Which of the following substances is not an element?

In a closed container,there is a mixture of $SO_2$,$CO_2$,and $O_2$ gases. Which sequence of reagents can be helpful to separate them?
$(I)$ Limewater
$(II)$ Acidified potassium dichromate
$(III)$ Alkaline pyrogallol

Which is the best method to separate a mixture of benzoic acid and naphthalene?