44. Equation of osmotic pressure
a) f(z) = 1-p/s
b) f(z) = 1-s/p
c) f(z) = S-1/P
d) f(z)= P-1/S

45. Core material include
a) drug
b) additives
c) stabilizers

d) all of the above

46. Rate determining step for controlled released delivery system is...........
a) absorption
b) drug release from dosage form
c) both a) and b)
d) penetration

47. Delivered the drug through the skin at the controlled rate to the systemic circulation
called as..............
a) ocular drug delivery system
b) nasopulmonary drug delivery system
c) transdermal drug delivery system
d) brain targeted drug delivery system

48. ................... is the process whereby synthetic and natural macromolecules adheres to
mucosal surface in the body
a) mucoadhesion
b) bioadhesion
c) both a) and b)
d) none of the above