Seat No.:
Subject Code: 2220001
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Enrolment No.
GUJARAT TECHNOLOGICAL UNIVERSITY
B.PHARM - SEMESTER- 2 EXAMINATION - SUMMER -2019
Subject Name: Physical Pharmacy
Time: 10:30 AM TO 01:30 PM
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Instructions:
- Attempt any five questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q.1 (a) Define surface tension. Explain capillary rise method. 06
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(b) Write a note on HLB value. 05
(c) Write a brief note on electrical properties of interfaces. 05
Q.2 (a) Write a note on liquid crystals. 06
(b) Give detail about polymorphism 05
(c) Write a note on binding forces between molecules. 05
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Q.3 (a) Explain solute-solvent interaction. 06
(b) Describe the role of surfactant in solubility. 05
(c) Explain the solubility of liquid in liquid. 05
Q.4 (a) Write a note on Cup and Bob viscometer. 06
(b) Explain plastic & pseudoplastic flow. 05
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(c) Explain thixotropy in formulation 05
Q.5 (a) Write a note on derived properties of powder. 06
(b) Enumerate the method are used to particle size determination. Explain sedimentation method 05
(c) Classify the complexes. Explain chelates. 05
Q.6 (a) Define suspension & explain sedimentation volume and degree of flocculation in detail. 05
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(b) Write a brief note on optical properties of colloid. 05
(c) Write a note on theories of emulsification 06
Q.7 (a) Write a note about on metal complexes. 05
(b) Explain wetting phenomena. 05
(c) Differentiate Lyophilic and Lypophobic colloids
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Date: 10-06-2019
Total Marks: 80
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