M.Sc. DEGREE EXAMINATION, APRIL 2016
Physics
CHEMICAL PHYSICS I
(2011 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 2 20)
Answer all questions.
1. What are bonding and anti-bonding orbitals?
2. How does sp2 hybridization occur?
3. Distinguish between rigid and non-rigid rotators.
4. What is called hyperfine interaction?
5. What is known as harmonic approximation of vibratinoal
motion?
6. What are the selection rules for the transitions between
vibrational states?
7. What is the called the inverse Raman effect?
8. Mention the effect of rotational motion on the vibrational
energy spectrum of a diatomic molecule.
9. What is called the nuclear spin resonance?
10. Mention the applications of ESR.
Sub. Code
521301
RW-10945
2
Sp2
Part B 5 25)
Answer all questions choosing either or
11. Explain the valence bond theory of molecules.
Or
Explain the effect of hybridization of orbitals on the
electronic energy spectrum of molecules.
12. Discuss the general theory of a non-rigid rotator
and obtain its rotational energy spectrum.
Or
Explain the influence of a static electric field on the
rotational spectrum of a molecule.
13. Explain the general theory of IR spectra of
molecules.
Or
Discuss the quantum theory of Franck-Condon
principle.
14. Explain the experimental method of studying the
anti-stokes Raman scattering by molecules and
mention its merits and demerits.
Or
Discuss the theory of multi-photon absorption by
molecules.
15. Outline the general theory of spin-lattice relaxation
process.
Or
Discuss the fundamental theory of NQR
spectroscopy.
RW-10945
3
Sp2
Part C 10 30)
Answer any three questions.
16. Using the molecular orbital theory, explain the theory of
obtaining the bonding and anti-bonding energies of a
H2 molecule.
17. Discuss the theory of rotational Raman spectra of a
diatomic molecule.
18. Discuss in detail the method of studying the molecular
structure using Raman spectroscopy.
19. Discuss the theory and experimental procedure of
studying the photo-acoustic Raman scattering by
molecules.
20. Discuss in detail the application of Mossbauer
spectroscopy to study the molecular structure.