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General Principles and Processes of Isolation of Elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryGeneral Principles and Processes of Isolation of Elements3 Marks
Question
Write the principle of the following:
  1. Zone refining.
  2. Froth floatation process.
  3. Chromatography.
✓

Answer

  1. Zone Refining – Impurities are more soluble in the melt than in the solid metal.
  2. Mineral particles are wetted by oils forming froth while gangue particles are wetted by water and settle down.
  3. Different components of a mixture are differently adsorbed on an adsorbent.

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