Osmania University (OU) 2008-2nd Year B.Pharm .II SEMISTER(MAIN) ,IL - exam paper

code no 3014
FACULTY OF TECHNOLOGY
B.Pharm.II Year II Semister(main) examination,april 2008
PHARMACEUTICAL ENGINEERING-II
[TIME:3 HOURS] [MAX MARKS:70]
ans all quetions.
all quetions carry equal marks.
1.(a) (i) elaborate closed circuit and open circuit maills? define any 2 mills in the former
category. 10
(ii) what is standard seive? elaborate various kinds of representing particle size
disrtibution? four
Or
(b) (i) classify powders.write a note on sieve analysis. 6
(ii)describe any 1 equipment for air filtration. 8


2.(a) (i) describe double maceration.explain the process and applications of continuous hot
percolation. 10
(ii)explain how the liquid-liquid extraction is carried out at laboratory level 4
Or
(b)describe the construction,working and applications of the subsequent equipments. 4+6+4
(i) forced circulation evaporator
(ii) fluidized bed dryer
(iii) cyclone separator.


3.(a) (i) what is adiabatic evaporation?describe any 1 equipment which works on this phenomenon.8
(ii) discuss meir's supersaturation theory and its limitations. six
Or
(b) (i) discuss different maethods of crystallization.describe swenson walker crystallizer and
write its advantages over tank crystallizer. 10
(ii) describe crystal habit.give an account on various kinds of crystals. 4


4.(a) (i) discuss the construction,working and applications of dryer used forslurries with neat
sketch. 10
(ii) write about the following: 4
(A)HETP
(B)mean free path
Or
(b) (i) discuss the principle involved in fractional distillation.describe different kinds of
fractoinating columns. 10
(ii) describe azeotrope,ideal solutin,bound water and EMC. 4


5(a) (i) expain the different kinds of liquid-liquid mixers. eight
(ii) explain the influence of process variables on automatic control
systems 6

(b) (i) discuss about the energy involved in granule compaction with a note on FD curves. 8
(ii) discuss the factors affecting the strength of granules. six

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Earning:   Approval pending.