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Loyola College M.Sc. Chemistry April 2006 Nuclear & Solid State Chemistry Question Paper PDF Download

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             LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

M.Sc. DEGREE EXAMINATION – CHEMISTRY

LM 43

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

  1. What are unit cell parameters of (i) triclinic (ii) hexagonal?
  2. What is ‘123’ oxide? Mention its significance.
  3. Mention the number of space lattices and space groups in two and three dimensional lattices.
  4. What is piezoelectric effect? Cite two examples of piezoelectric crystals.
  5. Give two examples for organic semiconductors. Cite two advantages of them.
  6. What is the significance of n/p ratio?
  7. How do radio particles come out of the nucleus without spending activation energy?
  8. What is the unique behaviour of 10B? How is this behaviour useful in nuclear reactors?
  9. What is the mechanism of γ – emission?
  10. Show that t1/2 = 693/λ

 

Part B

Answer any eight of the following:                                                       8×5 = 40

  1. Describe the operations that produce improper axis.
  2. Write a note on space groups.
  3. How is photoelectriccatalytic splitting of water carried out?
  4. How are semiconductors used in the photovoltaic cell?
  5. What is Kammerlingh – Onnes experiment? Write a note on Type I superconductors.
  6. Discuss the Debye theory on the heat capacity of solids.
  7. Explain the nature of forces in operating in the nucleii.
  8. Describe ranges of various radio particles.
  9. Why are the mass numbers of stable isotopes of chlorine and copper not continuous but are alternate numbers?
  10. What is hot atom chemistry? Explain Szillard – Charmers process and its application.
  11. What is the principle of neutron activation analysis? What are the disadvantages of this technique?
  12. Write a note on cold fusion.

Part C

 

Answer any four of the following:                                                        4×10 = 40

  1. Describe the one dimensional conducting in (SN)x and partially oxidized [Pt(CN)4]2-.
  2. Discuss the Fourier synthesis in obtaining electron charge density in the crystal structure analysis.
  3. Discuss the iron – thionine and Ru3+– bipyridyl systems in their photovoltaic behaviors.
  4. Discuss the use of nuclear shell model in explaining magic numbers.
  5. How is signal size in a charged particle counter affected by applied potential?
  6. Discuss working of a nuclear reactor.

 

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Loyola College M.Sc. Chemistry April 2007 Nuclear & Solid State Chemistry Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

LM 49

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)

  1. Give the unit cell parameters of (a) Monoclinic (b) rhombic systems
  2. What is a photovoltaic cell?
  3. Draw the solid state structures of (a) CdCl2      (b) SiO2
  4. What is a glide plane?
  5. Li+ doped in NiO is a good conductor. Explain.
  6. What are isotones? Give one example.
  7. What is the mechanism of g-ray emission?
  8. Define a Curie. How is it derived?
  9. Mention the principle involved in Geiger-Muller (GM) counter.
  10. State the nuclear spin of (a)       (b)

PART  – B                   (8 x 5 = 40 marks)

 

Answer any EIGHT questions.

  1. Write a note on Bravais lattices.
  2. Explain the “screw axis” and the operation involved.
  3. Write a note on photogalvanic cells.
  4. What are organic semiconductors? Explain their advantages.
  5. What are tungsten bronzes? Explain their properties.
  6. Discuss the inclusion compounds formed by graphite and their conducting
    characteristics.
  7. Write a note on scintillation counters.
  8. Discuss the principle and the construction of cyclotron.
  9. Write a note on chemical dosimeters.
  10. Describe the use of radioisotopes in medicine.
  11. Give the merits of the nuclear shell model of the nucleus.

 

PART – C                   (4 x 10 = 40 marks)

 

Answer any FOUR questions.

 

  1. Discuss the behaviour of high temperature superconductors. Explain the
    Bardeen-Cooper-Schriefer (BCS) theory.
  2. Describe the photoelectrocatalysis in splitting of water using TiO2 and SrTiO3.
  3. Explain the “atomic scattering factor” and “structure factor” in deriving the
    electron density by Fourier transform method.
  4. Derive the expression for binding energy of the nucleus using liquid drop model.
  5. Discuss the mechanism of a-ray emission from the nucleus.
  6. Discuss the fission yield curve. Discuss the energy involved and mechanism of
    nuclear fission.

 

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Loyola College M.Sc. Chemistry April 2008 Nuclear & Solid State Chemistry Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

GH 60

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

  1. Illustrate an improper axis?
  2. Give the lattice parameter of (a) orthorhombic (b) tetragonal crystal structures.
  3. Mention the coordination number in (a) TiO2 (b) CaF2
  4. What is Meisner effect?
  5. What are antiferromagnetic substances? Give one example.
  6. What are isotones? Give one example.
  7. What are mesons? How many types are there?
  8. How is 238U converted into 139Pu?
  9. Explain the use of radioisotope tracer in reaction mechanism with an example.
  10. Define a Curie.

                                                                         PART – B

Answer any EIGHT questions                                                                     8 ´ 5 = 40

  1. Describe the operation of glide plane.
  2. Mention the information provided by single crystal analysis.
  3. Write a note on (SN)x compounds
  4. Write a note on piezoelectric materials.
  5. Write a note on NLO materials.
  6. Discuss the characteristics of binding energy curve.
  7. How are the positron emission and electron capture differentiated?
  8. Write a note on scintillation counters.
  9. Explain the principle and function of cyclotron.
  10. How is neutron activation analysis carried out? Mention its application.
  11. What is NQR? How is it useful in the study of structure of compounds?
  12. Write a note on graphite intercalation compounds.

PART – C

Answer any FOUR questions                                                                      4 ´ 10 = 40

  1. Discuss the structure of YCu2Ba3O7-x. What is BCS theory?
  2. Describe the following operation (a) inversion (b) reflection  (c) screw axis.
  3. Discuss the photoelectrolysis of water using TiO2 and SrTiO3.
  4. Discuss the allowed and forbidden β – particle emission from the nucleus.
  5. Derive the binding energy expression from liquid drop model.
  6. Discuss the fission yield curve and energy involved in nuclear fission reactions.

 

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