Gujarat Technological University 2011 B.Pharm Pharmaceutics I - Question Paper

Seat No.: _____ Enrolment No.______
GUJARAT TECHNOLOGICAL UNIVERSITY
B. Pharmacy Sem - first Regular / Remedial exam January. 2011
Subject code: 210005
Subject Name: Pharmaceutics I
Date: 10 /01 /2011 Time: 10.30 am – 01.30 pm
Total Marks: 80
Instructions:
1. Attempt any 5 ques..
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Classify the centrifuges. provide the detailed principles of operation of
centrifuge used for biological extracts.
06
(b) Derive formula for relative centrifugal force. 05
(c) discuss the mechanism of filtration. 05
Q.2 (a) define compression refrigeration cycle with tagged diagram. 06
(b) Write a note on psychometric chart & measurement of humidity. 05
(c) The partial pressure of water vapor is 50mmHg in a mixture of air & water
vapor at 110oF & 1atm.pressure. How many of Btu of heat energy must be
added to 25 Lb of this mixture to raise the temperature to 125oF?
05
Q.3 (a) Write a note on compressible & non compressible cakes. How do we carry
out filtration when material is highly compressible?
06
(b) discuss the construction and working of filter-press. 05
(c) Write a brief note on cartridge filters. 05
Q.4 (a) discuss the construction & working of a forced circular evaporator 06
(b) Differentiate multiple effect & single effect evaporator. 05
(c) How film evaporators are differentiated from other conventional evaporators
on the basis of their working principle?
05
Q.5 (a) select the most suitable drying equipment for production of milk powder.
define its principle & working with tagged diagram.
06
(b) define the drying rate curve for crude fibrous drug. 05
(c) explain important factors affecting option of dryers for pharmaceuticals. 05
Q. six (a) describe & differentiate the evaporation, drying & distillation with example. 06
(b) Write short note on HETP & HTU in distillation process. 05
(c) discuss in detail about rectification. 05
Q. seven (a) discuss process of distillation of immiscible liquids. 06
(b) Write a note on Hygrometer. 05
(c) explain application of refrigeration & air –conditioning in pharma industry. 05
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Attachment: gujarat-technological-university-2011-b-pharm-52752-1.zip

Earning:   Approval pending.