Exam Details
| Subject | physical chemistry – iii | |
| Paper | ||
| Exam / Course | m.sc in chemistry | |
| Department | ||
| Organization | alagappa university | |
| Position | ||
| Exam Date | November, 2017 | |
| City, State | tamil nadu, karaikudi |
Question Paper
M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Third Semester
Chemistry
PHYSICAL CHEMISTRY III
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all the questions.
1. Define oscillator strength.
2. What do you understand by the term phosphorescence?
3. A cricket ball weighing 100 g is to be located within 0.1 Å.
What is the uncertainty in the velocity?
4. What is Compton Effect?
6. What is zero point energy?
7. The size of a nucleus is 10-12 cm. Treating it as a onedimensional
box show why electron does not exist in the
nucleus.
8. What are the characteristics of wave function?
9. What are polymers? How are they classified?
10. Give the structure of PMMA.
Sub. Code
4MCH3C3
AFF-4888
2
Wk ser
Part B x 5 25)
Answer all questions choosing either or
11. Discuss the mechanism of photosensitization using
suitable examples.
Or
Explain the method of storage of solar energy.
12. Derive de-Broglie relation. How was it verified?
Or
State and explain Heisenberg uncertainty principle.
13. Explain the properties of Hermitian operator.
Or
Derive the time-dependent Schrödinger equations
for a free particle in one dimensional box.
14. State and prove variation theorem.
15. Explain the kinetics and mechanism of free radical
polymerization
Or
Equal numbers of molecules with M1 =10,000 and
M2 1,50,000 are mixed. Calculate numberaverage
mass and mass-average mass of the
polymer.
AFF-4888
3
Wk ser
Part C x 10 30)
Answer any three questions.
16. What is Stern-Volmer equation? Derive the
equation.
What is chemiluminescence? Discuss its mechanism
in anion-cation reactions.
17. Explain Planck's quantum theory of black-body
radiation.
How are total energy and angular momentum
obtained by quantum mechanical operator?
18. What are vanishing commutators? Give suitable
examples.
Discuss the postulates of quantum mechanics.(6
19. Using variation theorem, solve the Schrodinger wave
equation for the ground state energy of Helium atom.
20. Determine the molar mass by viscocity method
Discuss the mechanism of ionic polymerization.
————————
Third Semester
Chemistry
PHYSICAL CHEMISTRY III
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all the questions.
1. Define oscillator strength.
2. What do you understand by the term phosphorescence?
3. A cricket ball weighing 100 g is to be located within 0.1 Å.
What is the uncertainty in the velocity?
4. What is Compton Effect?
6. What is zero point energy?
7. The size of a nucleus is 10-12 cm. Treating it as a onedimensional
box show why electron does not exist in the
nucleus.
8. What are the characteristics of wave function?
9. What are polymers? How are they classified?
10. Give the structure of PMMA.
Sub. Code
4MCH3C3
AFF-4888
2
Wk ser
Part B x 5 25)
Answer all questions choosing either or
11. Discuss the mechanism of photosensitization using
suitable examples.
Or
Explain the method of storage of solar energy.
12. Derive de-Broglie relation. How was it verified?
Or
State and explain Heisenberg uncertainty principle.
13. Explain the properties of Hermitian operator.
Or
Derive the time-dependent Schrödinger equations
for a free particle in one dimensional box.
14. State and prove variation theorem.
15. Explain the kinetics and mechanism of free radical
polymerization
Or
Equal numbers of molecules with M1 =10,000 and
M2 1,50,000 are mixed. Calculate numberaverage
mass and mass-average mass of the
polymer.
AFF-4888
3
Wk ser
Part C x 10 30)
Answer any three questions.
16. What is Stern-Volmer equation? Derive the
equation.
What is chemiluminescence? Discuss its mechanism
in anion-cation reactions.
17. Explain Planck's quantum theory of black-body
radiation.
How are total energy and angular momentum
obtained by quantum mechanical operator?
18. What are vanishing commutators? Give suitable
examples.
Discuss the postulates of quantum mechanics.(6
19. Using variation theorem, solve the Schrodinger wave
equation for the ground state energy of Helium atom.
20. Determine the molar mass by viscocity method
Discuss the mechanism of ionic polymerization.
————————
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