Download RTMNU B.Pharma 4th Semester 2017 Winter Pharmaceutics 4 (Unit Operations) Question Paper

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B.Pharm.

PHARMACEUTICS–IV (UNIT OPERATIONS)

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Paper-1

[Maximum Marks : 80

Time: Three Hours]

N.B. :— (1) Question No. 1 is compulsory.

(2) Solve any FOUR questions from remaining.

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(3) Draw neat labelled diagram wherever necessary.

1. Solve any FIVE of the following : 5×4=20
   1. Define the terms relative humidity, dew point, dry bulb and wet bulb temperature.
   2. What is azeotropic mixture ? How it can be separated ? State suitable example.
   3. Draw FMC curve showing it's different zones. Define EMC and CMC. Give its significance.
   4. Describe the principle of vacuum crystallizer with neat labelled diagram.

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   5. State three steps of crystallization. Write short note on nucleation and crystal growth.
   6. Explain the mechanisms of heat flow. What is black body and grey body ?
   7. Explain the principle, working and use of Swenson Walker crystallizer.
2. (a) Explain Miers theory of supersaturation; state its limitations. 8
   

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   (b) Describe principle, construction, working and use of Krystal crystallizer. 7
3. (a) Give classification of evaporators. Describe forced circulation evaporator in detail. 8
   (b) Write a note on capacity and economy of multiple effect evaporators. 7
4. (a) State Fourier's Law. Give its significance. Derive equation for conduction of heat through number of resistances. 8
   (b) What are heat exchangers and interchangers ? Describe tubular heaters in detail. 7

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5. (a) Define corrosion. Describe the method for prevention of corrosion. 8
   (b) What is humidification ? Draw well labelled diagram of humidifier and discuss its principle. 7
6. (a) Define drying. State classification of dryers with suitable examples. Discuss principle, construction and working of spray dryer with neat diagram. 8
   (b) Elaborate on molecular distillation in detail. 7
7. Write short notes on (any three) 5×3=15
   1. Freeze dryer

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   2. Fractional distillation
   3. Film evaporator
   4. Refrigerants and refrigeration cycle.

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POY-25685