Glycerol boils at $290\,^oC$ with slight decomposition. Impure glycerin can be purified by:

  • A
    Steam distillation
  • B
    Simple distillation
  • C
    Vacuum distillation
  • D
    Extraction with a solvent

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Glycerol boils at $290\,^{\circ}C$ with slight decomposition. Impure glycerine can be purified by

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Given below are two statements:
Statement-$I$: Retardation factor $(R_f)$ can be measured in $meter/centimeter$.
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