M. Phil Ph.D. Course Work Examination June July 2017
CHEMISTRY (Paper II)
Recent Trends in Physical Chemistry
Day Date: Wednesday, 28-06-2017 Max. Marks: 100
Time: 11.00 AM to 02.00 PM
Instructions: All questions are compulsory.
All questions carry equal marks and figures to
the right indicate marks.
Neat and labeled diagrams should be drawn
wherever necessary.
Use of calculator and log table is allowed.
Q.1 Describe experimental procedure used in preparation of thin films
using Langmuir-Blodgett technique. Discuss applications of these
films in fabrication of devices.
10
Answer any two of the following. 10
Describe with the help of a circuit diagram the characteristics of
transistors.
What is rectifier? Explain how can P-N junction diode serve as a
rectifier for alternating current.
Discuss general procedure used in preparation of thin films using
spin coating and sol-gel method.
Q.2 Answer the following: 10
How spin-spin coupling takes place in 1H NMR Spectroscopy?
Factors influencing chemical shift in NMR.
Attempt any two of the following: 10
Finger print region and group frequency region.
Mass fragmentation pattern in mass spectrum.
Explain the difference between 2D-NMR and proton NMR.
Q.3 Give a brief comment on the relationship between the structure and
the thermodynamic properties of simple liquids.
10
Write notes on any two of the following. 10
Method of determination of structure of liquids using X-ray
scattering technique.
Electronic heat capacity of metals.
Thermal properties of crystalline solids.
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Q.4 What is autocatalysis? Give some examples. Deduce kinetic
equation for such reactions.
10
Write notes on any two of the following. 10
Micellar catalysis.
Phase transfer catalysis.
Catalytic promoters and poisons.
Q.5 Give the meaning of distortion and orientation polarization of liquids.
Discuss variation of total polarization of polar and non-polar liquids
with temperature.
10
Answer any two of the following: 10
Method of determination of excess volume of liquid mixture.
Structure of water near the surface.
Intermolecular forces in liquid mixtures.