Download OU B.Pharma 2-1 Year 2015 6040 Pharmaceutical Analysis I Question Paper

Download OU (Osmania University) B.Pharma 2-1 (2nd Year 1st Sem) (Bachelor of Pharmacy) 2015 6040 Pharmaceutical Analysis I Previous Question Paper

Pharmacy
Hyderabad
OU - 1701 OU - 1701
Code No. 6040
FACULTY OF PHARMACY
B. Pharmacy 2/4 I-Semester (Main) Examination, November 2015
Subject : Pharmaceutical Analysis ? I (Chemical Analysis)
Time : 3 Hours Max. Marks: 70
Note: Answer all questions. All questions carry equal marks.
1 (a) (i) Define error. Classify and explain different types of errors. (8)
(ii) Explain about various methods of expressing concentration. (6)
OR
(b) (i) Define : (4x2)
(A) Accuracy (B) Standard deviation (C) Indicator (D) End point
(ii) What is meant by calibration? How to calibrate volumetric flask? (6)
2 (a) (i) Write a note on : (2x5)
(A) Common ion effect
(B) Salt Hydrolysis
(ii) How to prepare and standardize 0.1 N H
2
SO
4
? (4)
OR
(b) (i) Discuss the theories of neutralization indicators. (10)
(ii) Solubility product of Mg(OH)
2
is 3.4x10
-11
mol
3
/L
3
. Calculate solubility in g/L. (4)
3 (a) (i) Explain the steps involved in gravimetric analysis. (10)
(ii) How to prepare and standardize 0.1 N K MnO
4
? (4)
OR
(b) (i) Discuss the principle of redox titration and write a note on redox indicators. (4+4)
(ii) Write notes on co-precipitation and coagulation used in gravimetric analysis. (6)
4 (a) (i) Explain the principle involved in complexometric titrations. (5)
(ii) Write notes on solvents used in non-aqueous titrations. (5)
(iii) How to prepare and standardize 0.01M EDTA solution? (4)
OR
(b) (i) Write notes on Argentometric titrations. (5)
(ii) Write short notes on masking and demasking agents. (5)
(iii) How to prepare and standardize 0.1 N H ClO
4
. (4)
5 (a) (i) Define the terms with suitable examples. (3x2)
(A) Empirical formula
(B) Molecular weight
(C)Theoretical yield
(ii) Calculate the number of moles of sodium hydroxide in 500 ml. of 1M sodium
hydroxide solution. (4)
(iii) Calculate the percentage composition of elements in Na
2
CO
3
. (4)
OR
(b) (i) How many moles of Na
2
CO
3
are present in 53 gm of sodium carbonate? (4)
(ii) Calculate the percentage composition of elements in K
2
Cr
2
O
7
. [Atomic weight
of K = 39 ; Cr = 52 O = 16]. (4)
(iii) Write the mass balanced equation for the following: (3x2)
(A) Ba(OH)
2
+ NaCl BaCl
2
+ NaOH
(B) C
6
H
12
O
6
C
2
H
5
OH+CO
2
(C) NH
4
OH + H
2
SO
4
(NH
4
)
2
SO
4
+H
2
O
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