Which technique is used for the separation of a compound present in an aqueous solution?

Paper chromatography is an example of

Among the following,in which type of chromatography,both stationary and mobile phases are in liquid state?

Three organic compounds $A$,$B$ and $C$ were allowed to run in thin layer chromatography using hexane and gave the following result (see figure). The $R_f$ value of the most polar compound is $............\, \times 10^{-2}$

The fragrance of flowers is due to the presence of some steam-volatile organic compounds. These compounds are known as essential oils. At room temperature,these oils are insoluble in water but are miscible with water vapor. Name the suitable method for the extraction of these oils from flowers.

Which type of solvent is added to an aqueous solution in the differential extraction method?