Download GTU B.Pharma 2019 Summer 4th Sem BP403TP Physical Pharmaceutics Ii Question Paper

FirstRanker.com

Seat No.:

Subject Code: BP403TP

--- Content provided by‍ FirstRanker.com ---

Enrolment No.

GUJARAT TECHNOLOGICAL UNIVERSITY

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

Subject Name: Physical Pharmaceutics 1T

Time: 10:30 AM TO 01:30 PM

--- Content provided by‍ FirstRanker.com ---

Total Marks: 80

Date: 13-05-2019

Instructions:

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

--- Content provided by‍ FirstRanker.com ---

3. Figures to the right indicate full marks.

1. (a) Discuss pharmaceutical application of colloids. Differentiate various types of colloidal dispersion system. (06)
2. (b) Explain: Kraft point and gold number. (05)
3. (c) Explain kinetic properties of colloids. (05)
4. (a) Discuss the concept of DLVO theory along with the energy curve and explain how this theory is applied in stabilizing the colloidal dispersion. (06)

--- Content provided by​ FirstRanker.com ---

5. (b) What is the effect of plug flow in measurement of viscosity of a plastic system, in cup and bob viscometer? How plug flow can be minimised? (05)
6. (c) Write a note on thixotropy. (05)
7. (a) Discuss non-Newtonian flow with rheogram, mechanism and explain with suitable example. (06)
8. (b) Describe a suitable viscometer with diagram which can measure the viscosity of dispersion of sodium alginate in water. (05)
9. (c) Define suspension. Differentiate between flocculated and deflocculated suspension. (05)

--- Content provided by FirstRanker.com ---

10. (a) Discuss different approaches used to achieve flocculation in suspensions. (06)
11. (b) Explain sedimentation parameter of suspension in detail. (05)
12. (c) Enlist the physical instability markers of emulsion and discuss any two. (05)
13. (a) Enlist the different type of densities of powder. Write the experimental method for the determination of true density. (06)
14. (b) Explain method for determining particle surface area. (05)

--- Content provided by⁠ FirstRanker.com ---

15. (c) Give factors affecting powder flow. (05)
16. (a) Enlist methods of particle size estimation. Explain conductivity method in detail. (06)
17. (b) Discuss angle of repose and Carr’s Index with their pharmacopoeial specification. (05)
18. (c) Write a short not on accelerated stability study. (05)
19. (a) Describe the various methods of determination of reaction order. (06)

--- Content provided by‍ FirstRanker.com ---

20. (b) Explain factors which govern the rate of chemical reaction. (05)
21. (c) Discuss the various means of stabilization of product which is sensitive to oxidation. (05)