How will you separate a mixture of benzene and chloroform?

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

Suggest a method for the separation of a mixture of methanol and acetone.

Describe the method that can be used to separate two compounds with different solubilities in a solvent $S$.

In the fractional distillation of crude petroleum,which of the following statements is correct?

Define mixture and its types.