The most suitable method of separation of a $1:1$ mixture of $ortho$- and $para$-nitrophenols is:

What is chromatography used for?

Given below are two statements $:$
Statement $(I) :$ In partition chromatography,stationary phase is a thin film of liquid present on an inert support.
Statement $(II) :$ In paper chromatography,the material of the paper acts as a stationary phase.
In the light of the above statements,choose the correct answer from the options given below $:$

When is distillation under reduced pressure used?

Which one of the following techniques is not used to spot components of a mixture separated on a thin layer chromatographic plate?

State whether the following statements are True or False:
$(i)$ The boiling points of chloroform and aniline are $334 \ K$ and $457 \ K$ respectively.
$(ii)$ The vapour of chloroform is obtained after aniline in simple distillation.
$(iii)$ Chloroform is more volatile than aniline.