Rajiv Gandhi University of Health Sciences, Karnataka
Fourth Semester B. Pharm Degree Examination — 09-Jan-2020
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Time: Three Hours Max. Marks: 75 Marks
Physical Pharmaceutics - II
Q.P. CODE: 5015
Your answers should be specific to the questions asked
Draw neat labeled diagrams wherever necessary
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LONG ESSAYS (Answer any Two) 2 x 10 = 20 Marks
- Describe the kinetic properties of colloids.
- What is thixotropy? Explain the thixotropic properties of the plastic and pseudoplastic materials.
- Define emulsions. Classify with examples. Write a note on instabilities of emulsions.
SHORT ESSAYS (Answer any Seven) 7 x 5 = 35 Marks
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- How do you prepare lyophobic colloids? Give examples.
- Give the equation and graphical representation of zero order, first order and second order reaction.
- How do you determine bulk density?
- Differentiate creaming and cracking of an emulsion
- What are dilatant systems? Explain with examples.
- Explain the concept of Donnan membrane equilibrium.
- Discuss the physical and chemical factors influencing the chemical degradation of pharmaceutical product.
- Give the importance of porosity and angle of repose.
- How do you represent the particle size distribution graphically?
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SHORT ANSWERS (Answer All) 10 x 2 = 20 Marks
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- Why deflocculating agent is added in the determination of particle size by sedimentation method.
- What is hysteresis effect?
- Define hysteresis loop.
- Differentiate Micro and Multiple emulsions
- What do you mean by polydisperse system?
- What is hydrolysis? Write any two preventive methods of the same.
- What is £dc/dt?
- Name two instruments used to measure turbidity.
- What is ‘Rheogram’?
- Stoke’s law
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This download link is referred from the post: RGUHS B.Pharm 4th Year 2020 Previous Question Papers - Rajiv Gandhi University of Health Sciences
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