Nalanda Open University
Annual Examination 2016
B.Sc. Chemistry (Honours), Part-III
Paper-VI
Time: 3.00 Hrs. Full Marks: 80
Answer any five questions. All questions carry equal marks.
1. What is Crystal field Theory for the formation of a complex Compound?
How does This Theory account for the fact that is paramagnetic but
is diamagnetic Compound though both are octahedral
Compound?
2. What is ferrocene? How it is prepared? Give the structure of ferrocene?
Discuss its important reactions.
3. What do you mean by the dual nature of a particle? Derive an expression
for the de-Broglie relation. How was it verified.
4. Write down the important ore of Platinum? How Platinum metal is called
noble metal? Discuss its important types of platinum metal and their uses.
5. Elaborate role of sodium, Potassium and Magnesium in the plants and
animals.
6. What are important ore of Molybdenum? Give the details of the extraction
of Molybdenum from its important one. Why molybdenum exhibit different
oxidation state.
7. Explain on the basis of Molecular orbital Theory as
oxygen molecule is paramagnetic and a nitrogen molecule is
diamagnetic.
Hydrogen forms diatomic molecules where as helium forms monatomic
molecule only.
8. Write notes
R-S Coupling Magnetic susceptibility Hole formation
9. Discuss the main postulates of quantum Mechanics.
10. Write down the notes any two on the following:-
Element of symmetry
Symmetry operation
Point group
M.O diagram of Co.