1(a) Explain the construction and
working of a glass electrode. Mention their advantages and disadvantages. (06
marks)
(b) Define a concentration cell.
Explain the working of a concentration cell. (04 Marks)
(c) Define emf of a cell. How is
it determined? (04 Marks)
(d) A concentration cell is
constructed by dipping copper rods in 0.001 m and 0.1 M CuSO4
solutions. Calculate the emf of the cell at 298 K. (04 Marks).
2 (a) Explain the construction of
lead sorage battery. Write the discharging and charging reactions. (06 Marks)
(b) What are supercapacitors?
Explain their working. What are their advantages? (06 Marks)
(c) Explain electrochemical
theory of corrosion. (04 marks)
(d) What are the differences
between sacrificial anode method and impressed current method of cathodic
protection? What are the limitations of impressed current method. (04 Marks)
3 (a) Give an account of electroless
plating of nickel and copper. What are the applications? (06 Marks)
(b) What is decomposition
potential? How is it determined? What is its significance in electrolysis? (06
Marks)
(c) What are the characteristics
of a good deposit? (04 Marks)
(d) Explain the methods of
cleaning a metal surface prior to plating. (04 Marks)
4 (a) What is meant be cracking?
Describe with a neat diagram, fluidized bed cracking method. (06 Marks)
(b) What is biodiesel? How is it
prepared? What are the advantages? (06 Marks)
(c) Differentiate between direct
solar power utilization and indirect solar power utilization. (04 Marks)
(d) Write a note on physical and
chemical properties of silicon relevant to photovoltaics. (04 Marks)
5 (a) What are lower critical
temperature and upper critical temperature lines with respect to iron carbon
phase diagram. (04 Marks)
(b) Differentiate between true
equilibrium and metastable equilibrium. (04 Marks)
(c) Explain the principle of
potentiometric titration. How is the end point located? (06 Marks)
(d) State Beer’s law and
Lambert’s law. Derive the mathematical expression for Beer-Lambert’s law. (06
Marks)
6 (a) Define monomer, polymer and
functionality with examples. (06 Marks)
(b) Thermal control is rather
difficult in bulk polymerization. Explain. (04 Marks)
(c) Classify the polymers on the
basis of mechanism of polymerization. (06 Marks)
(d) Explain the methods of
polymer moulding. (04 Marks)
7(a) Give a brief account of
glass transition temperature. (04 Marks)
(b) What are conducting polymers?
Explain. (04 Marks)
(c) What are elastomers? Write
the structure for natural rubber and gutta percha. What are the differences
between them? (08 Marks)
(d) Write a note on nanocomposites.
(04 Marks)
8(a) Why does the sewage need
treatment? Explain the primary, secondary and tertiary treatment methods for
sewage. (08 Marks)
(b) Explain the treatments given
to water for municipal supply. (04 Marks)
(c) What are the impurities present
in water? (04 Marks)
(d) What are the characteristics
of potable water? (04 Marks)
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