Master of Science II (Physical Chemistry)
Examination: Oct Nov 2016 Semester III (New CBCS)
SLR No. Day
Date Time Subject Name Paper
No. Seat No.
SLR SD
244
Wednesday
23/11/2016
02.30 PM
to
05.00 PM
Solid State and Nuclear
Chemistry
C
XII
Instructions: Answer any five questions.
All questions carry equal marks.
Section-I, Q.1 is compulsory.
Attempt any twoquestions from Section II
Attempt any two questions from Section III
Answer to all questions should be written in the one answer
book.
Use of log table and calculators in allowed.
Total Marks:70
SECTION I
Q.1 Answer the following: 14
Give the equation which relates the Miller indices of a set of parallel planes,
interplaner distance and lattice parameters of cubic system.
State Hedvall's rule.
"The diffraction peaks from the and planes are not seen in the
XRD profile of sodium chloride". Give the reason.
Name the fuel used in the Breeder reactor.
Cooling curve of melt is a plot of versus
The ratio of reciprocals of interplaner spacing of cubic crystalline material is,
Indicate the type of the space lattice.
The unit of radioactivity 1 disintegration per second is known as
1 curie ii) 1 micro curie iii) 1 becquerel iv) 1 megha becquerel
Give the basis principle of Czochraski method of single crystal growth.
Indicate meaning of scintillator material.
Define the term reactor power.
Sulfiding of silver belongs to which type of solid state reaction?
Exchange reaction ii) Decomposition reaction
iii) Tarnish reaction iv) Addition reaction
State whether nuclear fission is exoergic or endoergic
What is heavy water?
"The properties of nanomaterials are size dependent". State whether this
statement is true or false.
SECTION II
Q.2 Give the principle underlying the single crystal growth from melts. Describe
Flame Fusion method of preparation of single crystal of semiconducting
materials.
07
Give the principle underlying the methods of purification of solids. Discuss
zone refining method of purification of semiconducting materials.
07
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Q.3 Describe X-ray powder diffraction method for determination of lattice
parameters of crystalline materials.
Determine the atomic weight of iron on the basis of following
information's d100=1.43 Ao density 7.87 gm per cc and structure BCC.
07
Estimate the ratio of reciprocals of interplaner spacing for the planes
and for the simple and face centered cubic lattices.
07
Q.4 Give a brief comment on the light water nuclear power reactor. 07
Explain the nuclear fission reaction and its significance in generation of
electrical energy. Why is the nuclear fusion reaction preferred in power
reactors rather than fission reaction?
07
SECTION -II
Q.5 What is homogeneous nucleation? How this nucleation affects single crystal
growth?
05
Give the principle of ionization detector. Describe working of ionization
detector used in measuring intensity of high energy radiations.
05
"Although the KCl belongs to the face centered cubic lattice, it behaves like
simple cube during diffracting X-rays". Justify with reason.
04
Q.6 Discuss factors influencing reactivity of solid state reactions. 05
Explain with examples solid state exchange reactions. 05
Discuss India's three phase nuclear energy programme. 04
Q.7 Write a note on any three of the following: 14
Czochralski method of single crystal growth
Law of isomorphism
Four factor formula of nuclear reactor
Schottkay and Frenkel defects.
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