Exam Details
| Subject | instrumental methods of analysis | |
| Paper | ||
| Exam / Course | m.sc in chemistry | |
| Department | ||
| Organization | alagappa university | |
| Position | ||
| Exam Date | November, 2017 | |
| City, State | tamil nadu, karaikudi |
Question Paper
M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
First Semester
Chemistry
INSTRUMENTAL METHODS OF ANALYSIS
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. Distinguish between absolute errors and relative errors.
2. Calculate mean and median of the following set of
values 2.5, 3.3, 5.6, 8.2, 11.5, 5.2.
3. What are the conditions for precipitation?
4. Certain precipitants are highly specific. Explain.
5. What are the advantages of three electrode systems over
two electrode systems?
6. Give the principle of amperometry.
7. Define limiting potential.
8. Draw the thermogram (TG curve) of CuSO4 5H2O .
9. Explain how colour of reaction is important in
colorimetric methods.
10. Mention the principle of Nephelometry.
Sub. Code
4MCH1C4
AFF-4879
2
Ws5
Part B x 5 25)
Answer all questions choosing either or
11. How are errors minimized?
Or
Write a note on F-test.
12. Distinguish between co-precipitation and
post-precipitation.
Or
Describe the applications of gravimetric method.
13. Outline the principle and applications of
chronopotentiometry.
Or
Coulometric titration is more advantageous over
volumetric titration. Explain.
14. Discuss the theory and principle of TGA.
Or
Draw and explain the DTA of zinc
hexafluorosilicate.
15. Explain the working and construction of Duboscq
calorimeter.
Or
Discuss the theory and principle of turbidimetry.
AFF-4879
3
Ws5
Part C x 10 30)
Answer any three questions.
16. Describe the method of least square for fitting a
best straight line.
In a set of measurements, the following
concentrations of Cu were reported 23.5,
25.6, 23.8, 22.9, 23.9. Calculate standard deviation
and coefficient of variance.
17. Write a note of Paneth-Fajan's-Hahn Law.
Explain the precipitation from homogenous medium
technique.
18. Discuss the principle and applications of
Electrogravimetry method.
19. Explain the factors affecting the TG curves.
The TG curves of calcium oxalate mono hydrate in
air and nitrogen atmosphere are different. Explain.
20. Determine the estimation of Cr by colorimetry
method.
Explain the principle and applications of AAS.
————————
First Semester
Chemistry
INSTRUMENTAL METHODS OF ANALYSIS
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. Distinguish between absolute errors and relative errors.
2. Calculate mean and median of the following set of
values 2.5, 3.3, 5.6, 8.2, 11.5, 5.2.
3. What are the conditions for precipitation?
4. Certain precipitants are highly specific. Explain.
5. What are the advantages of three electrode systems over
two electrode systems?
6. Give the principle of amperometry.
7. Define limiting potential.
8. Draw the thermogram (TG curve) of CuSO4 5H2O .
9. Explain how colour of reaction is important in
colorimetric methods.
10. Mention the principle of Nephelometry.
Sub. Code
4MCH1C4
AFF-4879
2
Ws5
Part B x 5 25)
Answer all questions choosing either or
11. How are errors minimized?
Or
Write a note on F-test.
12. Distinguish between co-precipitation and
post-precipitation.
Or
Describe the applications of gravimetric method.
13. Outline the principle and applications of
chronopotentiometry.
Or
Coulometric titration is more advantageous over
volumetric titration. Explain.
14. Discuss the theory and principle of TGA.
Or
Draw and explain the DTA of zinc
hexafluorosilicate.
15. Explain the working and construction of Duboscq
calorimeter.
Or
Discuss the theory and principle of turbidimetry.
AFF-4879
3
Ws5
Part C x 10 30)
Answer any three questions.
16. Describe the method of least square for fitting a
best straight line.
In a set of measurements, the following
concentrations of Cu were reported 23.5,
25.6, 23.8, 22.9, 23.9. Calculate standard deviation
and coefficient of variance.
17. Write a note of Paneth-Fajan's-Hahn Law.
Explain the precipitation from homogenous medium
technique.
18. Discuss the principle and applications of
Electrogravimetry method.
19. Explain the factors affecting the TG curves.
The TG curves of calcium oxalate mono hydrate in
air and nitrogen atmosphere are different. Explain.
20. Determine the estimation of Cr by colorimetry
method.
Explain the principle and applications of AAS.
————————
Other Question Papers
Subjects
- chemistry of inorganic complexes
- elective – corrosion chemistry
- elective — green chemistry
- elective — industrial chemistry
- elective — molecular photochemistry
- elective — pharmaceutical chemistry
- elective — polymer chemistry
- inorganic chemistry
- inorganic chemistry - ii
- inorganic chemistry — iii
- instrumental methods of analysis
- natural products and introductory biochemistry — (elective iii)
- organic chemistry – iii
- organic chemistry — i
- organic chemistry — ii
- physical chemistry
- physical chemistry – i
- physical chemistry – iii
- physical chemistry — ii
- quantum chemistry group theory kinetics and surface chemistry
- reactive intermediates photochemical and concerted reactions
- structural inorganic chemistry and photochemistry