DISTANCE EDUCATION
M.Sc. (Chemistry) DEGREE EXAMINATION, MAY 2018.
INSTRUMENTAL METHODS OF ANALYSIS
(2008 onwards)
Time Three hours Maximum 100 marks
Answer any FIVE questions.
Each question carries 20 marks.
x 20 100)
1. Explain the terms chromophore and auxochrome with example.
Name the different possible transitions. Occurring
in the uv region.
Define and explain Hook's law.
Write a note on Fermi Resonance.
2. Draw and explain the block diagram of an infrared spectrophotometer.
Discuss Mclafferty rearrangement with an example.

How will you differentiate inter and intramolecular hydrogen bonding using IR spectroscopy?
3. Compare the basic principles of ESR and NMR spectroscopic techniques.
Define and explain isotropic and anisotropic value.
Write a note on lanthanide shift reagents.
Sub. Code
14
DE-4070
2
wk4
5. What is chemical shift? What are the factors
affecting chemical shift value?
Discuss the presentation of EPR spectra.
Give the basic principle and applications of HPLC.

6. Distinguish between nephelometry and turbidimetry.
Discuss the principle of flame photometry.
Write the principle and applications of TGA.
DE-4070
3
wk4
7. What are the advantages of dropping mercury
electrode?
Discuss the instrumentation principle and applications of cyclic voltammetry.
Write a note on Null hypothesis.
8. What are thermometric titrations? Explain.
Discuss the significance of TGA curve.
Define the term error. Give its classification.
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