49. which of the following type of implant
a) root form implant
b) ramus - frame implant
c) blade - form implant
d) all of the above

50. Limitation of implantable drug delivery system
a) limited to potent
b) possibility og adveres reaction
c) biocompatibility issues
d) all of the above

51. Zero order release kinetics is attained in
a) sustain release
b) controlled release
c) enteric coating
d) immediate release

52. Released kinetics from dissolution controlled system is goverened by

a) fick' law of diffusion
b) zero order kinetice
c) noyes whitney equation
d) first order kinetics

53. What is advantage of bilayer tablet
a) have increased efficiency
b) two active pharmaceutical ingredients put in one tablet
c) to increased compliance
d) all of the above