Inter-Phase and Unsteady State Mass Transfer MCQ

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• The concentrations of the solute at various locations within the transfer zone do not change with time in unsteady state mass transfer.
  ক

  True

  খ

  False
• Estimate the interfacial solute concentration in the two liquids when the solute concentration is 45000 kg-moles/m3, interfacial solute concentration in liquid is 40000 kg-moles/m3, diffusivity is 2.5 × 10-11 m2/s and the length of the tube is 5m3 and the partition coefficient is 0.25.
  ক

  10000 kg-moles/m3

  খ

  20000 kg-moles/m3

  গ

  30000 kg-moles/m3

  ঘ

  40000 kg-moles/m3
• The absorption of sulphur dioxide from air by water is not an example of inter-phase mass transfer.
  ক

  False

  খ

  True
• Which separation process of bioseparation involves the inter-phase mass transfer of solutes?
  ক

  Liquid-liquid extraction, membrane separation

  খ

  Liquid-liquid extraction, membrane separation, leaching, chromatography

  গ

  Leaching, chromatography

  ঘ

  Membrane separation, leaching, chromatography
• The transfer of solute from one medium to another medium across an interface is called _____________
  ক

  Inter-phase mass transfer

  খ

  Steady state mass transfer

  গ

  Unsteady state mass transfer

  ঘ

  Convective mass transfer