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8.3. Organic chemistry purification and characterization — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry8.3. Organic chemistry purification and characterization1 Mark
MCQ
The correct statements among the following, for a "chromatography" purification method is:
  • A
    Organic compounds run faster than solvent in the thin layer chromatographic plate.
  • B
     Non-polar compounds are retained at top and polar compounds come down in column chromatography.
  • ✓
    $R_f$ of a polar compound is smaller than that of a non-polar compound.
  • D
    $R_f$ is an integral value.
✓

Answer

Correct option: C.
$R_f$ of a polar compound is smaller than that of a non-polar compound.
c
Non polar compounds are having higher value of $R_f$ than polar compound.

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