Diffusivity, Osmotic Pressure and Sedimentation Coefficient MCQ

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• What is the osmotic pressure difference across the membrane, if the osmotic pressure at inlet is 2.5atm and at outlet is 5.5atm?
  ক

  3.5atm

  খ

  2atm

  গ

  3atm

  ঘ

  2.5atm
• What will be the osmotic pressure of the solute having concentration of 2.5 kg-mole/m3?
  ক

  560.036 atm

  খ

  56.036 atm

  গ

  5603.6 atm

  ঘ

  5.603 atm
• Which bioseparation process has the role of osmotic pressure in separation?
  ক

  Membrane separation

  খ

  Filtration

  গ

  Sedimentation

  ঘ

  Centrifugation
• Who initially described the concept of osmotic pressure?
  ক

  Watson and Crick

  খ

  G. Mendel

  গ

  C. V. Raman

  ঘ

  Jean-Antoine Nollet
• Sedimentation coefficient of collagen is __________
  ক

  6.43

  খ

  1.17

  গ

  2.54

  ঘ

  4.5
• The rate of settling in centrifugation depends on ___________
  ক

  only geometry of vessel and the speed of rotation

  খ

  only geometry of vessel and location of vessel

  গ

  only speed of rotation

  ঘ

  geometry of vessel, location in the vessel, speed of rotation
• The tendency of bigger molecules to settle in a solution is called _____________
  ক

  Centrifugation

  খ

  Decantation

  গ

  Sedimentation

  ঘ

  Adsorption
• What is the diffusivity of glycerol in water?
  ক

  2.5 * 10-9 m2/s

  খ

  1.35 * 10-9 m2/s

  গ

  1.19 * 10-9 m2/s

  ঘ

  7.2 * 10-10 m2/s
• The friction factor is independent on shape of the molecule as well as on the degree of hydration.
  ক

  True

  খ

  False
• What are the parameters that influence the diffusivity of molecule in the solution?
  ক

  Size, friction factor, viscosity

  খ

  Charge, size, molecular weight

  গ

  Molecular weight, friction factor, viscosity

  ঘ

  Charge, friction factor, viscosity
• What is diffusion coefficient?
  ক

  Measure of solubility of molecule

  খ

  Measure of movement of molecule

  গ

  Measure of dispersion of molecules

  ঘ

  Measure of electrostatic charges of the molecule
• The random movement of molecule which is caused by intermolecular collision is called ___
  ক

  Diffusivity

  খ

  Solubility

  গ

  Electrostatic Charge

  ঘ

  Osmotic Pressure