M.Sc. (Semester III) (CBCS) Examination Nov/Dec-2018
Inorganic Chemistry
CO-ORDINATION CHEMISTRY I
Time: 2½ Hours
Max. Marks: 70
Instructions: All questions are compulsory. Draw neat and labeled diagram and give equations wherever necessary. All questions carry equal marks. Figures to the right indicate full marks. Use of logarithmic table and calculator is allowed.
Q.1
Multiple choice questions:
14
"Intensity of transition is usually weak". This is due to
Orbital allowed transition
Laporate forbidden transition
Hunds rule
Aufbau rule
How many electronic transitions are possible for d2 case in octahedral system?
2
3
4
5
According to Molecular Orbital Theory, the shape and size of a molecular orbital depends upon
Shape and size of the combining atomic orbitals
Numbers of the combining atomic orbitals
Orientation of the combining atomic orbitals
All of these
What is the measurable property of material in Differential Thermal analysis as a function of temperature or time
Change in volume
Difference in temperature
Change in mass
Change in time
Write geometry and hybridization for ions using VBT.
Tetrahedral and sp3
Hexagonal and dsp2
Square planar and dsp2
Tetragonal and dsp3
The CFSE for high spin d3 octahedral complex is
−0.6 Δoct
−1.8 Δoct
−1.6 Δoct+P
−1.2 Δoct
Using spin only formula, the magnetic moment (B.M.) for d5 case is
2.03 B.M.
1.73 B.M.
3.00 B.M.
2.45 B.M.

Magnetic susceptibility of diamagnetic materials is
+10−5
−10−5
105
10−5 to 10−2
How many number of unpaired electrons present in complex as per CFT approach?
1
0
2
3
10) Mention the compound used for the synthesis of Ziegler Natta catalyst.
RhI2 CO2
HCo(CO)4
RhCl(PPh3)3
HRh(PPh3)3
Page 2 of 2
SLR-VF-195
11) Which calibrant is used in DTA?
Glass beads
Silicon carbide
Alumina
All of these
12) Common example for ferri-magnetic materials is
Salts of s-block elements
Rare earth elements
Transition metals
Ferrites
13) The magnetic materials follow which law?
Faraday's law
Curie Weiss law
Lenz law
Ampere law
14) Basic source of magnetism
Charged particles alone
Movement of charged particles
Magnetic dipoles
Magnetic domains
Q.2

Answer the following (Any four)
08
Write in short on Carboxylation reaction.
What are charge transfer spectra? Write one example.
What is John Teller effect?
Write a note on Ziegler Natta polymerization.
Draw the molecular orbital diagram for an octahedral transition metal complex involving only sigma bonding.

Write notes on (Any two)
06
Applications of TGA
Peptide synthesis and hydrolysis
Antiferromagnetism
Q.3

Answer the following(Any two)
08
Explain the structure of on the basis of VBT.
Factor affecting on DTA curve.
What is magnetic susceptibility? Explain the determination of by Faraday method.

Answer the following (Any one)
06
What is polymerization? Explain olefin polymerization with suitable example.
Calculate CFSE value for high spin and low spin complexes of Mn5+ and Cr2+ configurations.
Q.4

Answer the following (Any two)
10
What are future trends in the research on catalysis and catalyst?
Explain the mechanism for hydrogenation reaction.
Distinguish between paramagnetic, diamagnetism and ferromagnetism.

Answer the following (Any one)
04
Differentiate VBT with CFT?
What are factors affecting stability of ternary complexes? Explain with illustrations.
Q.5
Answer the following (Any two)
14
Explain TGA spectrum of CuSO4.5H2O compound. Write the reactions involved in it at various stages of decomposition.
Derive Van Vleck equation for magnetic interaction and discuss its implications.
Derive the magnetic susceptibility equation. Describe an experimental set-up for measuring the magnetic susceptibility.