FACULTY OF PHARMACY
B. Pharmacy 2/4 II-Semester (Main) Examination, April 2017
Subject Pharmaceutical Engineering II
Time 3 Hours Max. Marks: 70
Note: Answer all questions. All questions carry equal marks.
1 Explain the procedure of determination of particle size and size distribution for
pharmaceutical powders by sieve analysis.
Write the construction and working of Rotex screen and mention its advantages
over other screening equipment.
OR
Compare and contrast cyclone separator and air separator with the help of
diagrams.
Write the construction and working of Podbialniak extractor.
2 Explain the methodology of energy and mass balances during evaporation
process.
Write the principle involved in distillation under reduced pressure along with the
advantages and drawbacks.
OR
Explain theory and commercial equipment involved in steam distillation process.
Describe significance of sieve plate column and packed columns in rectification
process with the help of diagrams.
3 Write the equipment and principle involved in spray drying process with help of
diagrams.
Explain the Mier's super saturation theory.
Classify crystallization equipment.
OR
Explain the importance of gas adsorption in pharmacy.
Describe the concepts of two phase flow through the packed tower used for gas
adsorption.
Write the causes for caking of crystals and mention the prevention methods.
4 Write the factors influencing the selection of mixing equipment.
Write the principle and working of planetary mixer with the help of diagram.
OR
Write different types of impellers used for liquid-liquid mixing with diagrams.
Write the construction and working of any one equipment used for mixing of
semisolids.
5 Explain the concepts of feedback and feed forward mechanisms in automatic
process control.
Discuss the effect of temperature and pressure as process variables.
OR
Explain different forces distributed during compaction of tablets along with force
measurement devices with help of diagram.