CHEMISTRY
PAPER I
SECTION A
I. Answer any four of the following:

a. Explain the principle of ion selective electrodes• What are their applications'?
b. What is Born-Haber cycle? what is its use?
c. What are quantum numbers What are their significances?
d. Write a note on liquefaction of gasses.
e. What are reverse reactions? Derive the rate equation for reserve reaction.
2 state phase rule and explain the term involved. Draw the phase diagram of a binary system of partially miscrible liquids.
Deduce a Pressure volume relationship in reversible adiabatic expansion of an ideal gas.
3 What are fuel cells? Describe the construction and working of a fuel cell
Discuss the transition stale theory of reaction rates.
4 Describe the experimental set up for the measurement of emf of a cell.
What is an adsorption isotherm? How are Langmuir and BET isotherms obtained? what are their characteristics?.
SECTION B
5. Attempt any lour of the following:
Give an account of the rod ox and precipitation reactions in liquid ammonia.
What is chelate effect?
What are fluxional molecules? Give two examples, How are they characterized?
Explain the variation of magnetic moments within the lanthanides.
Identify the various physical pathways by which a photo excited molecule undergoes deactivation.

6 Discuss the structural aspects of metal-olefin and metl-alkyne complexes giving experimental evidences 20
Discuss the salient feature of molecular orbital theory and discuss its use in explaining the bonding in N2,02: and HP molecule.

7 What are metal atom cluster?
Discuss the structure and bonding, of two metal clusters with M-M single bond and M-M multiple bonds.
Assign the observed electronic absorption hands and Explain on the basis of crystal field theory.

8 Discuss in detail the mechanism of oxygen transport in biological system.
Give an account of the linkage isomerism and the various factors stabilizing the isomers. Choose suitable example.