Q.1
Which of the following is not true about membrane separations?
  • a) Components which are passed through the membrane is called permeate
  • b) Components which are not passed through are called retentate
  • c) Non-porous membrane is never used
  • d) Membrane separations require a driving force
Q.2
What is the driving force in Microfiltration?
  • a) Pressure difference
  • b) Pervaporation
  • c) Difference in fugacity
  • d) Concentration difference
Q.3
What is the driving force in Dialysis?
  • a) Pressure difference
  • b) Pervaporation
  • c) Difference in fugacity
  • d) Concentration difference
Q.4
What is the driving force in pervaporation?
  • a) Pressure difference
  • b) Activity difference
  • c) Difference in fugacity
  • d) Concentration difference
Q.5
What is the driving force in gas separation?
  • a) Pressure difference
  • b) Pervaporation
  • c) Difference in fugacity
  • d) Concentration difference
Q.6
The selection of membrane does not depend on which property?
  • a) Pore size distribution
  • b) Water permeability
  • c) Perporometry
  • d) Film thickness formed
Q.7
What is the bubble point method used for?
  • a) To determine the pore size distribution
  • b) To determine size of all pores
  • c) To determine size of largest pore
  • d) To determine membrane thickness
Q.8
What is perporometry used for?
  • a) To determine the size distribution of active pores
  • b) To determine the size distribution of the dead pores
  • c) To determine the size distribution of the membrane
  • d) To see the permeability of the solvent through the membrane
Q.9
How is the resistance to solvent flow determined?
  • a) By measuring pore size distribution
  • b) By measuring amount of air passing
  • c) By measuring the volume of solvent passed after a certain time
  • d) By calculating water permeability
Q.10
What is the advantage of track etching?
  • a) Pores are large
  • b) Narrow size distribution
  • c) Dense membrane
  • d) Less expensive
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