Seat No.: Enrolment No.
GUJARAT TECHNOLOGICAL UNIVERSITY
B.PHARMACY- SEMESTER-I • EXAMINATION WINTER-2016
Subject Code:2210001 Date: 27/01/2017
Subject Name: UNIT OPERATION-I
Time: 10.30 AM 01.30 PM Total Marks: 80
Instructions:
1. Attempt any five questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1

Describe the mechanisms of size reduction with suitable examples of equipment.
06

Explain Fluid Energy Mill.
05

Explain Ball mill.
05
Q.2

Explain elutriation. Describe elutriation methods.
06

Describe pharmacopoeial standards for sieves.
05

Discuss cyclone separator for size separation.
05
Q.3

Classify equipments for solid mixing. Explain Planetary Motion Mixer.
06

Give mechanisms of solid- solid and liquid liquid mixing.
05

Explain the terms with example: Positive Mixture, Negative Mixture and Neutral Mixture.
05
Q.4

Discuss Mier's supersaturation theory with its limitations.
06

Explain mechanism of crystallization using neat and labeled diagram.
05

Describe Swenson-Walker crystallizer with diagram.
05
Q.5

Enumerate types of Extraction processes. Explain Multiple Maceration.
06

Write about various solvents used for Extraction.
05

Describe Soxhlet apparatus for extraction.
05
Q. 6

Enlist various hazards encountered in Industry. Explain Electrical Hazards.
06

Describe briefly the different devices available for measurement of temperature.
05

Write brief note on Fire Extinguishers.
05
Q.7

Describe methods for Waste water treatment in Pharmaceutical Industry.
06

Describe elements of automated process control system.
05

Write a note on supercritical fluid extraction
05