Loyola College Nuclear & Solid State Chemistry Question Papers
Loyola College M.Sc. Chemistry April 2006 Nuclear & Solid State Chemistry Question Paper PDF Download
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
M.Sc. DEGREE EXAMINATION – CHEMISTRY
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FOURTH SEMESTER – APRIL 2006
CH 4952 – NUCLEAR AND SOLID STATE CHEMISTRY
(Also equivalent to CH 4802)
Date & Time : 22-04-2006/9.00-12.00 Dept. No. Max. : 100 Marks
Part A
Answer the following 10×2 = 20
- What are unit cell parameters of (i) triclinic (ii) hexagonal?
- What is ‘123’ oxide? Mention its significance.
- Mention the number of space lattices and space groups in two and three dimensional lattices.
- What is piezoelectric effect? Cite two examples of piezoelectric crystals.
- Give two examples for organic semiconductors. Cite two advantages of them.
- What is the significance of n/p ratio?
- How do radio particles come out of the nucleus without spending activation energy?
- What is the unique behaviour of 10B? How is this behaviour useful in nuclear reactors?
- What is the mechanism of γ – emission?
- Show that t1/2 = 693/λ
Part B
Answer any eight of the following: 8×5 = 40
- Describe the operations that produce improper axis.
- Write a note on space groups.
- How is photoelectriccatalytic splitting of water carried out?
- How are semiconductors used in the photovoltaic cell?
- What is Kammerlingh – Onnes experiment? Write a note on Type I superconductors.
- Discuss the Debye theory on the heat capacity of solids.
- Explain the nature of forces in operating in the nucleii.
- Describe ranges of various radio particles.
- Why are the mass numbers of stable isotopes of chlorine and copper not continuous but are alternate numbers?
- What is hot atom chemistry? Explain Szillard – Charmers process and its application.
- What is the principle of neutron activation analysis? What are the disadvantages of this technique?
- Write a note on cold fusion.
Part C
Answer any four of the following: 4×10 = 40
- Describe the one dimensional conducting in (SN)x and partially oxidized [Pt(CN)4]2-.
- Discuss the Fourier synthesis in obtaining electron charge density in the crystal structure analysis.
- Discuss the iron – thionine and Ru3+– bipyridyl systems in their photovoltaic behaviors.
- Discuss the use of nuclear shell model in explaining magic numbers.
- How is signal size in a charged particle counter affected by applied potential?
- Discuss working of a nuclear reactor.
Loyola College M.Sc. Chemistry April 2007 Nuclear & Solid State Chemistry Question Paper PDF Download
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
|
M.Sc. DEGREE EXAMINATION – CHEMISTRY
FOURTH SEMESTER – APRIL 2007
CH 4952 – NUCLEAR & SOLID STATE CHEMISTRY
Date & Time: 25/04/2007 / 9:00 – 12:00 Dept. No. Max. : 100 Marks
PART – A
Answer all the questions. (10 x 2 = 20 marks)
- Give the unit cell parameters of (a) Monoclinic (b) rhombic systems
- What is a photovoltaic cell?
- Draw the solid state structures of (a) CdCl2 (b) SiO2
- What is a glide plane?
- Li+ doped in NiO is a good conductor. Explain.
- What are isotones? Give one example.
- What is the mechanism of g-ray emission?
- Define a Curie. How is it derived?
- Mention the principle involved in Geiger-Muller (GM) counter.
- State the nuclear spin of (a) (b)
PART – B (8 x 5 = 40 marks)
Answer any EIGHT questions.
- Write a note on Bravais lattices.
- Explain the “screw axis” and the operation involved.
- Write a note on photogalvanic cells.
- What are organic semiconductors? Explain their advantages.
- What are tungsten bronzes? Explain their properties.
- Discuss the inclusion compounds formed by graphite and their conducting
characteristics. - Write a note on scintillation counters.
- Discuss the principle and the construction of cyclotron.
- Write a note on chemical dosimeters.
- Describe the use of radioisotopes in medicine.
- Give the merits of the nuclear shell model of the nucleus.
PART – C (4 x 10 = 40 marks)
Answer any FOUR questions.
- Discuss the behaviour of high temperature superconductors. Explain the
Bardeen-Cooper-Schriefer (BCS) theory. - Describe the photoelectrocatalysis in splitting of water using TiO2 and SrTiO3.
- Explain the “atomic scattering factor” and “structure factor” in deriving the
electron density by Fourier transform method. - Derive the expression for binding energy of the nucleus using liquid drop model.
- Discuss the mechanism of a-ray emission from the nucleus.
- Discuss the fission yield curve. Discuss the energy involved and mechanism of
nuclear fission.
Loyola College M.Sc. Chemistry April 2008 Nuclear & Solid State Chemistry Question Paper PDF Download
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
|
M.Sc. DEGREE EXAMINATION – CHEMISTRY
FOURTH SEMESTER – APRIL 2008
CH 4952 – NUCLEAR & SOLID STATE CHEMISTRY
Date : 05/05/2008 Dept. No. Max. : 100 Marks
Time : 1:00 – 4:00
PART – A
Answer ALL the questions 10 ´ 2 = 20
- Illustrate an improper axis?
- Give the lattice parameter of (a) orthorhombic (b) tetragonal crystal structures.
- Mention the coordination number in (a) TiO2 (b) CaF2
- What is Meisner effect?
- What are antiferromagnetic substances? Give one example.
- What are isotones? Give one example.
- What are mesons? How many types are there?
- How is 238U converted into 139Pu?
- Explain the use of radioisotope tracer in reaction mechanism with an example.
- Define a Curie.
PART – B
Answer any EIGHT questions 8 ´ 5 = 40
- Describe the operation of glide plane.
- Mention the information provided by single crystal analysis.
- Write a note on (SN)x compounds
- Write a note on piezoelectric materials.
- Write a note on NLO materials.
- Discuss the characteristics of binding energy curve.
- How are the positron emission and electron capture differentiated?
- Write a note on scintillation counters.
- Explain the principle and function of cyclotron.
- How is neutron activation analysis carried out? Mention its application.
- What is NQR? How is it useful in the study of structure of compounds?
- Write a note on graphite intercalation compounds.
PART – C
Answer any FOUR questions 4 ´ 10 = 40
- Discuss the structure of YCu2Ba3O7-x. What is BCS theory?
- Describe the following operation (a) inversion (b) reflection (c) screw axis.
- Discuss the photoelectrolysis of water using TiO2 and SrTiO3.
- Discuss the allowed and forbidden β – particle emission from the nucleus.
- Derive the binding energy expression from liquid drop model.
- Discuss the fission yield curve and energy involved in nuclear fission reactions.