M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Second Semester
Chemistry
PHYSICAL CHEMISTRY — II
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all the questions.
1. Explain the significance of entropy of activation.
2. Mention any four characteristics of chain reactions.
3. What is Einstein coefficient?
4. Give the important criteria for a molecule to be
microwave active.
5. State the explain mutual exclusion principle.
6. How are fundamental and overtones explained in IR
spectroscopy?
7. What are the limitations of NQR?
8. Define zero field splitting in ESR.
9. What are irreducible representations?
10. Define symmetry operations.
Sub. Code
4MCH2C3
AFF-4883
2
WS2
Part B x 5 25)
Answer all questions, choosing either or
11. Write a note on kinetic isotope effects.
Or
Give the mechanism of thermal H2 Br2 reaction
and derive the rate law.
12. Discuss the effect of isotopic effect in rotational
spectra.
Or
Discuss the rotational spectra of rigid diatomic
molecules.
13. Write a note on Fermi resonance.
Or
Outline the classical theory of Raman effect.
14. Discuss how NQR is used to study hybridization
and ionic character of the bond.
Or
Write a note on hyper fine splitting in ESR.
15. Write a note on direct product groups.
Or
State and explain Great orthogonality theorem.
AFF-4883
3
WS2
Part C x 10 30)
Answer any three questions.
16. Explain the mechanism and kinetics of N2O5
decomposition.
Discuss the theory of branching chain reactions and
explain the causes for explosions.
17. Discuss the molecular parameters derived from rotational
spectra.
18. Give a concise account of Fortrat diagram.
Discuss the production of laser and explain one
application of laser-Raman spectroscopy.
19. Discuss the factors affecting the g values in ESR
spectroscopy.
Differentiate between nuclear quadrapole coupling
in atoms and molecules.
20. Describe the direct product representation.
Construct the character table for C2v point group.
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