FACULTY OF PHARMACY
B. Pharmacy 2/4 I-Semester (Main) Examination, November 2018
Subject Pharmaceutical Analysis I (Chemical Analysis)
Time 3 Hours Max. Marks: 70
Note: Answer all questions. All questions carry equal marks.
1 Define error. Classify and explain different types of errors.
Explain about various methods of expressing concentration.
OR
Define
Accuracy Standard deviation Indicator End point
What is meant by calibration? How to calibrate volumetric flask?
2 Write a note on
Common ion effect
Salt Hydrolysis
How to prepare and standardize 0.1 N H2SO4?
OR
Discuss the theories of neutralization indicators.
Solubility product of Mg(OH)2 is 3.4x10-11 mol3/L3. Calculate solubility in g/L.
3 Explain the steps involved in gravimetric analysis.
How to prepare and standardize 0.1 N K MnO4?
OR
Discuss the principle of redox titration and write a note on redox indicators.
Write notes on co-precipitation and coagulation used in gravimetric analysis.
4 Explain the principle involved in complexometric titrations.
Write notes on solvents used in non-aqueous titrations.
(iii)How to prepare and standardize 0.01M EDTA solution?
OR
Write notes on Argentometric titrations.
Write short notes on masking and demasking agents.
(iii)How to prepare and standardize 0.1 N H ClO4.
5 Define the terms with suitable examples.
Empirical formula
(B)Molecular weight
(C)Theoretical yield
Calculate the number of moles of sodium hydroxide in 500 ml. of 1M sodium
hydroxide solution.
(iii)Calculate the percentage composition of elements in Na2CO3.
OR
How many moles of Na2CO3 are present in 53 gm of sodium carbonate?
Calculate the percentage composition of elements in K2Cr2O7. [Atomic weight
of K 39 Cr 52 O 16].
(iii)Write the mass balanced equation for the following:
Ba(OH)2 NaCl BaCl2 NaOH
(B)C6H12O6 C2H5OH+CO2
NH4OH H2SO4 (NH4)2SO4+H2O