M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Third Semester
Chemistry
PHYSICAL CHEMISTRY III
(CBCS 2011 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. State and explain Heisenberg uncertainity principle.
2. Give the operator for position and momentum.
3. What is commutator operator?
4. Explain normalisation of wave functions.
5. What are radial distribution functions?
6. Predict the shape of 1s orbital with the help of its wave
function.
7. How are polymers classified? Give examples.
8. What is degree of polymerisation? Indicate its
significance.
9. Explain the term nanotechnology.
10. What are the principal properties used to explore
nanomaterials?
Sub. Code
1MCH3C3
AFC-10560
2
WK16
Part B x 5 25)
Answer all questions, choosing either or
11. Describe de Broglie's concept of matter waves. How
was it experimentally verified?
Or
Derive the operator for kinetic energy.
12. State the postulates of quantum mechanics.
Or
Explain eigan functions and eigan values.
13. Write down the Schrodinger equation representing
a simple harmonic motion and obtain its solution.
Or
Discuss the approximations considered in the
treatment of many electron atoms.
14. Give an account of mechanism of ionic
polymerisation.
Or
Discuss the mechanism of Zeigler Natta
polymerisation.
15. Explain the principle involved in micro analysis for
the characterisation of nano materials.
Or
How will you characterise nano materials using
uv -vis spectroscopy?
AFC-10560
3
WK16
Part C x 10 30)
Answer any three questions.
16. Obtain the operator for potential energy and angular
momentum.
17. Derive Schrodinger wave equation.
18. For a particle in one-dimensional box, show that
the average value of the momentum along the
x axis is zero.
Indicate how the Schrodinger equation for the atom
may be solved.
19. Discuss the kinetics and mechanism of free radical
polymerisation.
20. Discuss the principal elements of an SEM.
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