Other questions in this quiz

2. Which of these defines POROSITY?

  • path length of pores
  • frequency of pores
  • size of pores

3. Which of these processes is the rate controlling step in the diffusion model?

  • diffusion across boundary layer
  • diffusion through the membrane
  • dissolution from drug particles to molecules
  • diffusion into the bulk

4. Which of these is diffusion through polymer (Dp) not dependant on?

  • tortuosity
  • Surface area
  • Porosity
  • diffusion coefficient through liquid pores

5. In release rate slab geometry, which of these are not used in the dMt/dt equation?

  • diffusion coefficient in polymer membrane
  • partition coefficient between membrane and reservoir
  • porosity
  • Total surface area

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