M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
First Semester
Chemistry
Elective I — ANALYTICAL CHEMISTRY
(CBCS 2015 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. What is meant by precision?
2. List out the sources of systematic errors.
3. What is the principle of chromatography?
4. How is column packed in GC?
5. What are the types of membranes?
6. What are the factors controlling lonic separation?
7. What are the principle of thermal analysis?
8. What is the limitation of flame photometry?
9. What are the differences between electrochemical sensors
and biosensors?
10. What are the advantages of DME used in polarography?
Sub. Code
536501
RW-955
2
sp3
Part B x 5 25)
Answer all questions, choosing either or
11. Explain the following terms with proper examples.
Mean
Median
Average deviation
Standard deviation.
Or
Explain significant figures. What is the rule to
determine significant figures?
12. Explain ascending and descending methods of paper
chromatography.
Or
Write a short notes on TLC.
13. Explain the Reverse Osmosis Process.
Or
What are the types of equipments employed for
electrophoresis, dielectrophoresis and electro
dialysis separations?
14. Compare AAS with AES.
Or
Write a brief note on thermometric titrations.
15. Write a short note on cyclic voltametry and
stripping voltametry.
Or
What are the different types of amperometric
titration curves?
RW-955
3
sp3
Part C x 10 30)
Answer any three questions.
16. What is meant by error? Provide the different types of
errors and indicate how it can be minimized.
17. Explain briefly on
Gas chromatography
HPLC.
18. Explain the following
Nanofiltration
Donnan dialysis
Choice of adsorbents for adsorption techniques
Microfiltration
Ultra filteration.
19. Explain
Spectrofluorimetry
Turbidimetry
Nephelometry.
20. Write notes on
Polarographic maxima
Half-wave potential
Dissolved oxygen.
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