B Pharmacy 2nd Year – Annual
Pharmaceutical Chemistry - IV
BPH – 211
Time: Three Hours M. Marks : 80
Note: Attempt any five questions. All questions carry equal marks.
- (A) What is an indicator? How does it works?(B) Write a note on adsorption indicator.
- (A) What do you understand by the terms ionization and dissociation. Give Examples.(B) Derive an expression for dissociation constant for dibasic acid.
- (A) Define with examples the terms ‘conductance’, ‘specific conductance’ and ‘ionic mobility’.(B) Construct a titration curve using conductometric technique for titration of a weak acid against strong base.
- “Weak acids and weak bases can be titrated using non-aquous solvent”. Justify the statement using suitable example from each case. Discuss the role of solvent in non- aqueous titrations.
- Write notes on:(A) Ion Exchange Chromatography(B) Size Exclusion Chromatography
- (A) What are iodimetric and iodometric titration? Give examples of each class.(B) How will you prepare 0.1N iodine solution? How 0.1N iodine solution can be standardised?
- (A) What are complexes and chelates? Discuss the factors affecting stability of complexes.(B) How will you prepare and standardise 0.1M solution of EDTA?
- Write short notes on following:(A) Precision and Accuracy(B) Primary and Secondary standards(C) Amperiometric titration(D) Oxygen flask combustion