Total No. of Questions 12] [Total No. of Pages 02
M.Sc. (Previous) DEGREE EXAMINATION, MAY 2018
First Year
CHEMISTRY
Physical Chemistry
Time 3 Hours Maximum Marks :70
SECTION A
Answer any four of the following questions. × 71/2 30)
Q1) Define entropy and write about entropy changes in isolated systems.
Q2) Describe classius Clayperon equation.
Q3) Explain the theory of α decay by giving examples.
Q4) Write about schotky and Frenkel defects in crystals.
Q5) Define cell EMF and its measurement.
Q6) Write about micelles and reverse micelles.
Q7) Write the mechanism of homogeneous catalysis reaction with an example.
Q8) State and explain Laws of photochemistry.
SECTION B
Answer all questions. Choosing one from each unit.
× 10 40)
Unit I
Q9) Write about partial molar quantities and Van't Hoff's equation.
OR
Derive thermodynamic phase rule.
Unit II
Q10) Write the principle and applications of Isotope dilution analysis and
radiometric titrations.
OR
Explain Miller indices and labelling of planer.
(DCHE04)
Unit III
Q11) How do you determine cell concentration without transference?
OR
Explain specific conductance and equivalent conductance. Write about their
variation with concentration.
Unit IV
Q12) Write Lindmann's theory of reaction rates.
OR
Define quantum yield of a photochemical reaction and reactional with high
and low quantum yields.