Seat No.: Enrolment No.
GUJARAT TECHNOLOGICAL UNIVERSITY
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B.PHARM - SEMESTER - 1- EXAMINATION -WINTER - 2018Subject Code: BP102TP Date: 03/01/2019
Subject Name: Pharmaceutical Analysis I
Time:10:30 AM TO 01:30 PM Total Marks: 80
Instructions:
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- Attempt any five questions.
- Make Suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q.1 (a) Define error. Classify the error and methods of their minimization. 06
(b) Discuss various sources of impurities. 05
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(c) Write a note on dropping mercury electrode (DME). 05
Q.2 (a) Explain in detail theories acid- base indicators. 06
(b) Define buffer solution. Explain in detail Henderson-Hasselbach equation for finding pH of buffer solution. 05
(c) What is non aqueous titration? Give merits, demerits and application of non aqueous titration. 05
Q.3 (a) What is gravimetric analysis? Discuss steps involved in gravimetric analysis. 06
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(b) Discuss in detail about Diazotization titration. 05
(c) What is hydrolysis? Derive equation for finding pH of aqueous solution of salt of strong acid and weak base. 05
Q.4 (a) Write a short note on (I) Masking and Demasking reagents (I) pM indicators. 06
(b) Define Ligand and Chelate. Give an account of different types of EDTA titrations. 05
(c) Write a note on Volhard’s method of Precipitation titration. 05
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Q.5 (a) Discuss the principle involved in the assay of magnesium sulphate IP’96. 06
(b) Enlist types of redox titration and explain iodine titration in detail. 05
(c) Explain in detail Mohr’s method. 05
Q.6 (a) Write a brief note on types of non aqueous solvents and leveling and differentiating effect of solvent. 06
(b) Define terms: (i) Co Precipitation (ii) Primary standard compound (iii) Standardization (iv) Pharmacopeia (v) Normality. 05
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(c) Describe factors affecting on conductance. 05
Q.7 (a) Comments: (1) Water is differentiating solvent for HCl and CH3COOH. (2) Starch indicator should be added near the end point in iodine titration. (3) Electrolyte solution is used for wash precipitate. 06
(b) Define Reference electrode. Enlist types of it and write a note on Saturated Calomel electrode (SCE). 05
(c) Write a brief note on different techniques of analysis. 05
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