M.Sc. (Semester III) (CBCS) Examination Nov/Dec-2018
Inorganic Chemistry
NUCLEAR CHEMISTRY
Time: 2½ Hours
Max. Marks: 70
Instructions: All questions are compulsory. Draw neat and labeled diagram and give equations wherever necessary. Figures to the right indicate full marks.
Q.1
Select the most correct alternative from the following and rewrite the sentences
14
The unit of Quadrapole moment of nucleus is
m2
m3
cm3
N/m2
The reaction 9Be n)9B have threshold energy 2.059Mev, then its threshold energy is
1.34 MeV
-1.86 MeV
-1.02 MeV
-1.22 MeV
Nuclear reactions induced by X-rays or √ -photons of high energy are referred as reactions.
Radiative
Photonuclear
Evaporation
Spallation
The unit of reaction cross-section is
barn
cm3
N/m
Joule m2
When a nucleus on high excitation splits into a light a heavy fragment having same N/Z ratio, the process is called
Fragmentation
Spallation
Fusion
Thermonuclear reaction
The measure of the probability of reaction number is known as
reaction rate
reaction cross section
nuclear reaction
threshold energy
is not used as a moderator.
Heavy water
Water
Graphite
Boron

The reactor performs the following functions as that of in a steam power plant.
Furnace
Turbine
Electric generator
Boiler
fuel occurred naturally.
U235
Pu239
Pu241
U233
10) In gas cooled reactors moderator is used.
light water
heavy water
graphite
beryllium
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SLR-VF-196
11) Mass absorption coefficient unit is
N/m2
cm2/g
N/m
Joule m2
12) The stopping power is the rate of energy loss per unit length of matter is referred as
LET
EC
EZ
IE
13) Q-value for the reaction 11B(d, p)12B 1.36 then threshold energy is
1.343 MeV
2.272 MeV
0.568 MeV
1.192 MeV
14) model corresponds to the magic numbers.
Spin-orbit coupling
Collective model
Liquid drop model
Fermi gas model
Q.2
a)Answer the following (any four)
08
What is the significance of packing fraction?
What is nuclear cross section?
What are the uses of research reactors?
Give any two merits of liquid drop model?
What is dosimetry?
b)Write notes on (Any two)
06
Liquid drop model
Formation of compound nucleus
Thorium extraction
Q.3
a)Answer the following(Any two)
08
Discuss the radiolysis of some aqueous solutions.
Discuss the safety of nuclear reactors.
Explain in brief symmetric fission.
b)Answer he following (Any one)
06
Explain in brief uranium resources in India.
Discuss the heavy ion induced nuclear reactions and photonuclear reactions.
Q.4
a)Answer the following (Any two)
10
Explain the type's gamma interaction with the matter. What are the health effects of gamma radiations?
Describe the construction and working of graphite moderated fast breeder reactor.
Explain in brief collective nuclear model.
b)Answer the following (Any one)
04
Discuss the Fermi gas model.
Explain in brief heavy water manufacturing in India.
Q.5
Answer the following (Any Two)
14
a)What is binding energy? Explain in brief empirical mass equation.
b)Discuss the health effects of gamma radiations.
c)Discuss in detail the nuclear shell model for shell structure. Bring out the clearly significance of nuclear shell model.