Which of the following can be purified by sublimation?

Describe the use of a separatory funnel in the extraction of an organic compound.

Chromatography is used for the purification of:

How can an organic compound present in an aqueous solution be separated?

Explain the process of fractional distillation.

By mistake,an alcohol (boiling point $97\,^{\circ}C$) was mixed with a hydrocarbon (boiling point $68\,^{\circ}C$). Suggest a suitable method to separate the two compounds. Explain the reason for your choice.