Which two organic compounds are purified by the sublimation technique?

Describe the simple distillation method for the purification of liquid compounds.

Consider the following table$-$

Column-$I$	Column-$II$
$(A).$ Best and latest technique for isolation,purification and separation of organic compounds	$(i).$ Chromatography
$(B).$ In Lassaigne's test for $N$	$(ii).$ Vacuum distillation (distillation under reduced pressure)
$(C).$ In Lassaigne's test for $S$	$(iii).$ Violet coloured complex is formed
$(D).$ Aniline is purified from water by	$(iv).$ Prussian blue coloured complex is formed
$(E).$ Glycerol is purified from spent lye	$(v).$ Steam distillation

The correct match is $-$

What is a theoretical plate?

$A$ chromatography column,packed with silica gel as the stationary phase,was used to separate a mixture of compounds consisting of $(A)$ benzanilide,$(B)$ aniline,and $(C)$ acetophenone. When the column is eluted with a mixture of solvents,hexane: ethyl acetate $(20: 80)$,the sequence of obtained compounds is:

The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in the vapour phase. $A$ suitable method for the extraction of these oils from the flowers is: