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B.Pharm (Second Semester) (C.B.S.) Examination
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PHARMACEUTICAL ANALYSIS-I
Paper-4
Time : Three Hours]
[Maximum Marks: 80
N.B. :— (1) Question No. 1 is compulsory.
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(2) Solve any four questions from the remaining.
(3) Draw neat labeled diagram wherever necessary.
(4) Assume suitable data wherever necessary.
1. Solve any five of the following : 4×5=20
(a) Define ligands. Classify them with examples.
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(b) Write about primary and secondary standards.
(c) Why is magnesium added in calcium determination by complexometry ?
(d) Give the preparation and standardization of 0.1 M perchloric acid.
(e) Comment on the role of glycerin in the assay of boric acid.
(f) Compare and contrast Iodimetry and Iodometry.
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(g) Define Normality and Molarity with suitable examples. Compare their merits and demerits.
2. (a) Classify non-aqueous solvents with suitable examples. 10
(b) Explain levelling and differentiating effect of solvent. Write assay of Ephedrine hydrochloride by non-aqueous titration. 5
3. (a) What is gravimetric analysis ? Explain it operations involved in gravimetric analysis. 10
(b) Discuss in brief co-precipitation and post-precipitation. 5
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4. (a) Write the theory of adsorption indicators. 7
(b) Explain Volhard's method. Give the method for preparation and standardization of 0.1 M silver nitrate. 8
5. (a) Explain theories of neutralisation indicator. 7
(b) Define accuracy, precision and error. Give the classification of errors and write in short methods to minimise them. 8
6. (a) Explain types of EDTA titration and write the factors affecting stability of complex formed. 10
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(b) Discuss the theory of metal ion indicator. 5
7. Write a note on Redox indicators with examples. Discuss about ceric ammonium sulphate titration. Give the method for preparation and standardization of 0.02 M potassium permanganate. 15
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