Download GTU B.Pharma 2019 Winter 4th Sem 2240001 Unit Operations Ii Question Paper

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Seat No.:

Subject Code: 2240001

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Enrolment No.

GUJARAT TECHNOLOGICAL UNIVERSITY

B.PHARM - SEMESTER- 4 EXAMINATION - WINTER -2019

Subject Name: Unit Operations-II

Time: 02:30 AM TO 05:30 PM

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Total Marks: 80

Date: 18-12-2019

Instructions:

1. Attempt any five questions.
2. Make suitable assumptions wherever necessary.

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3. Figures to the right indicate full marks.

1. (a) Write a note on factors affecting filtration. 06
   (b) What are the advantages and disadvantages of centrifugal sedimenters? Discuss its application in pharmacy. 05
   (c) Compare and contrast filtration, centrifugation and distillation. 05
2. (a) Explain plate and frame filter press with suitable diagram. 06
   

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   (b) Discuss mechanisms of filtration in detail. 05
   (c) Define filter aid. Discuss compressible and non-compressible cakes. 05
3. (a) Explain principle, diagram, construction, working, advantages and disadvantages and uses of a spray dryer. 06
   (b) Define EMC, CMC and FMC. What is bound moisture? 05
   (c) Classify dryers used in pharmacy. Write a note on any one type of convection dryer. 05

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4. (a) Write a note on molecular distillation process. 06
   (b) Discuss different types of fractionating column. 05
   (c) Define volatility. What is relative volatility and derive equation for it. 05
5. (a) Explain factors affecting evaporation 06
   (b) What is first and second falling rate period in drying? 05
   

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   (c) What is reflux ratio and total reflux? What is the relationship between reflux ratio and the distillate product? 05
6. (a) Classify evaporators based on form of movement with suitable examples for each class:. Discuss any one in detail with diagram. 06
   (b) Discuss the laws used to determine boiling point rise due to material in solution 05
   (c) Define economy of an evaporator. What is a multiple effect evaporator? 05
7. (a) Write a note on psychrometric chart. 06
   

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   (b) Discuss applications of HVAC system in pharmacy 05
   (c) Define Dew point, Wet bulb temperature, Humidity, Humid heat and Refrigerant 05