Master of Science II (Analytical Chemistry)
Examination: Oct /Nov 2016 Semester III (New CBCS)
SLR No. Day
Date Time Subject Name Paper
No. Seat No.
SLR SD
263
Friday
18/11/2016
02:30 PM
to
05.00 PM
Instrumental Methods of
Analysis-I
C
X
Instructions: Attempt in all five questions.
Section-I is compulsory.
Attempt any two questions from Section II and any two
questions from Section III
Answers to all questions (Section II, III) should be written in
the one answer book.
All questions carry equal marks.
Figures to the right indicate full marks.
Use of log table and calculators in allowed.
Total Marks:70
SECTION I
Q.1 Answer the following 14
Mention typical dead time of a GM counter.
Give the principle of TGA.
Mention different types of ion selective electrodes.
What different inorganic materials used in scintillation detectors?
What is the role of supporting electrolyte used in voltametry?
Represent typical TGA curve with suitable example.
Define dielectric constant.
Name Complete the following nuclear reaction 55Mn 56Mn.
The scientist introduced the technique of high frequency titrations.
What is liquid-liquid junction potential?
can be used as a reference electrode.
Hydrogen ii) Calomel iii) Silver-Silver Chloride iv) All of these
Sketch typical polarogram and mention E1/2.
Define decomposition potential.
Which parameter is measured in the technique DSC?
SECTION II
Q.2 With neat labeled diagram, explain glass electrode used for pH measurement. 07
Illustrate how electrogravimeteric technique is used in electrolytic separation
of metals.
07
Page 1 of 2
Q.3 Discuss the applications of amperometric titrations. 07
What do you mean by tracer technique? Discuss how this technique is used in
agriculture and chemical investigations.
07
Q.4 With the help of typical pulse high-voltage curve, discuss ionization and
proportional region.
07
Describe instrumentation for DTA. 07
SECTION III
Q.5 Give the principle and working of coulometer. 05
Discuss typical applications of differential scanning calorimetry. 05
Explain how neutron activation analysis is utilized in forensic applications. 04
Q.6 Describe the cells used in high frequency titrations. 05
Write a note on radiometric titrations-precipitation titration. 05
Explain how different factors affect the DTA curve. 04
Q.7 Write short notes on any THREE 14
Gas sensing electrodes
Advantages of high frequency titrations
Principle of stripping voltametry
Thermometric titrations