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GUJARAT TECHNOLOGICAL UNIVERSITY
B.PHARM - SEMESTER- 2 EXAMINATION - WINTER -2019
Subject Code: 2220003 Date: 17-12-2019
Subject Name: Pharmaceutical Analysis-11
Time: 10:30 AM TO 01:30 PM Total Marks: 80
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Instructions:
- Attempt any five questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q.1 (a) Describe in detail van Deemeter equation and terms in it. 06
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(b) Give statement of Kohlrausch‘s law and its application. 05
(c) Define and classify chromatography. Enlist the theories of chromatography. Describe any one in detail 05
Q.2 (a) Describe multiple extraction technique. How pH affects extractability of the drugs. 06
(b) What is DSC? Write the application of DSC. 05
(c) Describe the construction, reaction, advantages and disadvantages of standard hydrogen electrode. 05
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Q.3 (a) Write in detail about dropping mercury electrode. 06
(b) Classify electro-analytical methods. Discuss about advantages and limitation of instrumental method of analysis. 05
(c) Discuss principle, methodology and applications of TLC. 05
Q.4 (a) What is S/N ratio? Explain the source of noise in instrumental analysis. 06
(b) Give difference between optically active and optically inactive compound 05
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(c) What is the difference between DSC and DTA? 05
Q.5 (a) Describe the oxygen combustion flask method. 06
(b) Explain following term in detail 05
a. Migration current
b. Diffusion current
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(c) Describe factor affecting conductance. 05
Q.6 (a) Discuss the principle of pH metry. 06
(b) Enlist various electrodes used in potentiometry. Explain any two in detail. 05
(c) Discuss the different development techniques of paper chromatograph 05
Q.7 (a) Discuss method of detecting end point by potentiometer titration. 06
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(b) What is stripping voltammetry? Explain in detail any two techniques. 05
(c) Write note on gasometric method. 05
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