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6. Fill in the blanks of this description of the random walk model.

  • a)entropy b)concentration c) thermal d)maintain e) high
  • a) kinetic energy b) concentration c) thermal d) maintain e) low
  • a)kinetic energy b) concentration c) controlled d) resist e) low

7. Which of these is NOT a derivative of the higuchi equation?

  • c
  • d
  • a
  • b

8. In classification of Rate-Controlled Systems, fill in the blanks.

  • a) membrane/reservoir b) erodible c) swelling
  • a) erodible b) swelling c) membrane/reservoir
  • a) pulsatile b) erodible c) membrane/reservoir

9. Which of these defines POROSITY?

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

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

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