39. Coulter counter is used to determine.
a. Solubility
b. Polymorphism

c. Surface characetristics
d. Particle size

40. What are the factors implicated in the performance and design of oral controlled
release system
a) physiology of larger site
b) drug physicochemical properties
c) biopharmaceutical properties
d) all of the above

41. Which of the following method of microencapsulation
a) air suspension technique
b) pan coating method
c) solvent evaporation technique
d) all of the above

42. The biological factors influencing the design and act of controlled release product is
........
a) partition coeficient
b) absorption
c) molecular size
d) solubility

43. ................... is the process in which small droplets or particles of liquids or solid
material are surrounded by continuous film of polymeric material
a) polymerization
b) microencapsulation
c) macromolecular conjugation
d) none of the above