Which technique among the following, is most appropriate in separation of a mixture of 100 mg of p…

Which technique among the following, is most appropriate in separation of a mixture of 100mg of p-nitrophenol and picric acid?
  1. Steam distillation
  2. 2-5 ft long column of silica gel
  3. Sublimation
  4. Preparative TLC (Thin Layer Chromatography)

Solution

Solvent polarity has been related to Rf value of nitrocompounds.

100mg p-nitrophenol and picric acid have different Rf value on silica gel plate

∴ Preparative TLC is best to separate 100mg of para nitrophenol and picric acid

Asked in: JEE Main 2022 (26 Jul Shift 1)

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