M.Sc. (Semester (CBCS) Examination Mar/April-2018
Chemistry
INORGANIC CHEMISTRY I
Time: 2½ Hours
Max. Marks: 70
Instructions: Attempt in all five questions. Section-I is compulsory. Attempt any two questions from Section-II and any two questions from Section-III. Answer to all questions should be written in same answer book. All question carry equal marks. Figures to the right indicate full marks. Neat and labeled diagrams should be drawn wherever necessary. Use of log table and calculators is allowed.
Section I
Q.1
Answer the following.
14
What is photoelectric effect?
What are the symbols of quantum numbers?
Which are the two characters of the light?
Give a general equation to state the reducing properties of the transition elements.
What is the name of the more complete theory that has been resulted by combination of the electrostatic crystal field theory and the molecular orbital theory?
State the Jahn-Teller Effect.
Arrange following ions as per the increasing order in nephelauxetic series.
What are the Walsh diagrams?
Write the atomic inversion reaction of ammonia molecule.
Where is the position of the impurity band with respect to the valence band and conduction band?
How is the current flow in the rectifier device?
Write an equation for radioactive disintegration.
What is the principle of the neutron activation analysis?
Name any two counting techniques in nuclear chemistry.
Section II
Q.2
Give formulation of the Schrodinger equation for the wave mechanical model of an atom. Name the three quantum numbers of an electron and explain significance of each quantum number.
07
What are theories of bonding for coordination complexes? Explain the ligand field theory. Comment on splitting of the d-orbital's in law symmetry environment.
07
Q.3
Discuss the VSEPR theory with applications.
07
What are the types of nuclear reactions? Discuss in detail the nuclear fission reaction. Give calculation of the energy released in nuclear fission, and energy release from mass defect.
07

Q.4
Give the comparison of structures of CH4, NH3, H2O and H3O+.
07
What are the insulators and semiconductors? Discuss in detail the intrinsic and extrinsic semiconductors and conduction mechanism.
07
Section III
Q.5
Discuss the spectral consequences of the Jahn-Teller effect.
05
What is meant by screening effect? Describe Slater's rules.
05
Discuss with suitable examples the free radical mechanism and nucleophillic substitution reactions of the covalently bonded compounds.
04
Q.6
Discuss bonding in nitrogen, oxygen and sulphur compounds.
05
What are the charge transfer spectra? Discuss the characteristics of charge transfer spectra.
05
Explain the black body radiation.
04
Q.7
Write a note on any three of the following.
14
Tracer technique
Energetics of Hybridisation
Racah parameters
Hund's Rule