DISTANCE EDUCATION
M.Sc. (Chemistry) DEGREE EXAMINATION, MAY 2017.
INSTRUMENTAL METHODS OF ANALYSIS
(2008 onwards)
Time Three hours Maximum 100 marks
Answer any FIVE questions.
Each question carries 20 marks.
20 100)
1. What do you mean by fundamental vibrations? How
will you detect the type of hydrogen bonding
involved in particular compound by IR spectra?
Discuss in detail the various factors which influence
the vibrational frequency of a particular group. Give
examples.
How will you determine the formation of charge
transfer complexes using UV spectra?
2. Calculate the absorption maximum for each of the
following compounds using the Woodward Fieser
rule.




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WK 6
What are the different type of transitions observed
in -unsaturated carbonyl compounds? How are
absorption maximum and intensity shifted when
carbonyl groups is not conjugated.
Write short notes on Fermi resonance.
3. What is meant by the term chemical shift? What are
the various factors which influence the chemical
shift value?
Explain the following terms in NMR spectroscopy.
Nuclear overhauser effect
Spin-spin coupling.
Write down the importance of values in ESR
spectroscopy.
4. What do you understand by the terms, double
resonance and spin tickling? How are they helpful
in simplifying the spectra?
Compare ESR and NMR techniques.
Write down the principle of ESR spectra.
5. What do you understand by meta stable ions? How
are these recognised in the mass spectrum? What is
its importance?
Write down the principle involved in paper and thin
layer chromatography.
Explain the different types of ORD curves.
6. State and explain -halo ketone rule with an
example and give its applications.
Write down
MeLafferty rearrangement and
Nitrogen rule.
Write short notes on, circular birefringence.
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WK 6
7. What is turbidimetry? How is it related to
calorimetry?
What is meant by thermogram? Explain with an
example.
Discuss the principle and applications of flame
photometry.
8. Write down the principle and applications of cyclic
voltammetry.
Give the principle of coulometric analysis. Discuss
some important coulometers used in this analysis.

What are ion selective electrodes? Write their
advantages.