Loyola College M.Sc. Chemistry Nov 2013 Material Science Question Paper PDF Download

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Loyola College M.Sc. Chemistry Nov 2014 Material Science Question Paper PDF Download

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Loyola College M.Sc. Chemistry Nov 2016 Material Science Question Paper PDF Download

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Loyola College M.Sc. Chemistry Nov 2006 Material Science Question Paper PDF Download

                        LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

M.Sc. DEGREE EXAMINATION – CHEMISTRY

AD 25

THIRD SEMESTER – NOV 2006

CH 3875 – MATERIAL SCIENCE

 

 

Date & Time : 06-11-2006/9.00-12.00   Dept. No.                                                       Max. : 100 Marks

 

 

PART – A

Answer all the questions                                  (10 x 2 = 20)

 

  1. What are “glide planes”?
  2. Give the expression for Brinell Hardness number.
  3. Mention few applications of single crystals.
  4. List the thermodynamical properties that can be measured using TG/DSC methods.
  5. Write a note on “electron charge density maps”.
  6. What is Meissner effect?
  7. What is Hall effect?
  8. What is breakdown diode? What are its uses?
  9. What is Josephson’s effect?
  10. What are ferrites? What is the role of this compound in super conductivity?

 

 

PART – B

 

Answer any eight questions                                 (8 x 5 = 40)

 

  1. Outline the principle, instrumentation and applications of thermogravimetric method.
  2. State Brags’s law. Discuss the powder method of X-ray diffraction.
  3. With neat sketch explain the Bridgman-Stockbarger method of crystal growth from melt.
  4. What are Miller indices? Illustrate their formation in different planes of a cube.
  5. Discuss the role of modulus as an essential parameter in the structural design.
  6. Describe the slow evaporation technique of growing crystals with Manson jar apparatus.
  7. How are cooper pairs formed? Explain BCS theory of superconductivity.
  8. Describe the role of TaS2 in high temperature superconductivity.
  9. Describe domain theory to account for the Hysteresis behaviours of magnetic materials.
  10. Write short notes on a) LED b) Photo voltaic cell.
  11. Explain qualitatively how a p-n junction functions as a rectifier.
  12. Distinguish between Zenner breakdown and avalanche breakdown.

 

 

 

PART – C

 

Answer any four questions                                                 (4 x 10 = 40)

 

  1. Describe (i) Chemical reaction (ii) Chemical reduction (iii) Complex decomplexion and (iv)    solubility reduction methods of growing single crystals by gel.
  2. Outline the essential features of rubber like elasticity. Obtain the equation of            state for           the rubbering material.
  3. What is meant by symmetry operation? Describe point group and space group        symmetry        elements with necessary diagram.
  1. Explain the working of a p-n junction. Discuss forward and reverse biasing of p-n junction.
  2. Describe the behaviour and properties of conductors, insulators and semiconductors on the    basis of band theory.
  3. Write short notes on a) 1-2-3 oxides b) Chevral phases c) hard and soft magnetic materials.

 

 

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Loyola College M.Sc. Chemistry April 2008 Material Science Question Paper PDF Download

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

M.Sc. DEGREE EXAMINATION – CHEMISTRY

GH 41

 

THIRD SEMESTER – APRIL 2008

CH 3875 – MATERIAL SCIENCE

 

 

 

Date : 30-04-08                  Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART A

Answer all the questions                                                                   10 ´ 2 = 20 marks

  1. Illustrate proper and improper axes of symmetry.
  2. Explain mirror plane with an example.
  3. List the advantages of neutron diffraction.
  4. Mention the applications of single crystals in science and technology.
  5. Write a note on deformation by slip.
  6. What are Cheveral phases? Give one example.
  7. What is Josephson Effect?
  8. ‘Li+ doped NiO shows a high conductivity’. Explain
  9. What is piezoelectric effect?
  10. What are tungsten bronzes?

PART B

Answer any EIGHT questions                                                         8 ´ 5 = 40 marks

  1. Discuss the working of DTA instrument with a neat sketch and explain its
    applications.
  2. Discuss the importance of crystal pulling techniques with the help of
    Czochralski method.
  3. Explain the effect of grain size on the dislocation motion.
  4. Give a brief introduction to crystal planes and directions. How are the crystal planes indexed?
  5. With a neat diagram, explain different symmetry elements and the
    combination of symmetry elements.
  6. Explain the role of modulus as one of the vital parameters in the design of
    structures.
  7. Write a note on tetracyanoplatinate compounds.
  8. Write a note on graphite intercalation compounds
  9. Describe the Honda cell experiment to decompose water into its elements.
  10. Write a note on metal oxide based semiconductors.
  11. Discuss the shape memory alloys.
  12. Discuss the behaviour of magnetoresistance materials.

 

PART C

Answer any FOUR questions                                                          4 ´ 10 = 40 marks

  1. What are Baravis lattices? Discuss their characteristics supported by neat
    sketches and tables.
  1. Outline the growth of single crystals by Gel technique and discuss the
    experimental procedure for 1) Chemical reaction method 2) Solubility
    reduction method and 3) Complex and Decomplex methods.
  2. What is a rubbery material? Derive the expression for equation of state for
    the rubbery material.
  3. Discuss the Li+ intercalated TiS2 type of materials for battery applications.
  4. Discuss the structure and superconductivity behaviour of high temperature superconductors.
  5. Discuss the domain theory and hysteresis loop to explain the ferromagnetic behaviour.

 

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Loyola College M.Sc. Chemistry Nov 2008 Material Science Question Paper PDF Download

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

DB 29

M.Sc. DEGREE EXAMINATION – CHEMISTRY

THIRD SEMESTER – November 2008

    CH 3875 – MATERIAL SCIENCE

 

 

 

Date : 10-11-08                 Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

PART A

Answer all the questions.                                                                                  10 x 2 = 20

  1. What are proper and improper axes?
  2. Mention the steps involved in the determination of Miller Indices.
  3. State and explain Bragg’s law of X- ray diffraction.
  4. Write a note on work hardening and dynamic recovery.
  5. Discuss the role of modulus as an essential parameter in design.
  6. How is NaxTaS2 prepared?
  7. What are n- and p-type semiconductors? Give an example for each.
  8. Define Hall effect.
  9. Draw the plot of variation of susceptibility with temperature for ferro and ferrimagnetic materials.
  10. Give any two applications of shape memory alloys.

PART B

Answer any eight questions.                                                                                8 x 5 = 40

  1. Mention the advantages of SEM over electron microscope. Discuss the working
    principle of SEM with neat diagram.
  2. Describe the Bridgman-Stockberger melt method of crystal growth.
  3. Discuss the disadvantages in using polymer materials and explain how the composite
    materials will be more useful in structural design?
  4. Discuss in detail the TG method of thermal analysis with neat sketch.
  5. Describe neutron diffraction method for crystal structure determination.
  6. Write notes on mirror plane, glide plane and screw axis.
  7. Write short notes on the following:
  8. a) Second harmonic generators
  9. b) optical mixing
  10. Discuss the critical magnetic field and critical temperature of superconducting

compounds using Meissner effect.

 

  1. Describe the structure of Na+ in β – alumina.
  2. What are intercalation compounds? Explain with an example.
  3. What are Cooper pairs? How is BCS theory helpful to describe the

superconductivity?

  1. What are pyroelectric materials? Give any three applications.

PART C

Answer any four questions.                                                                              4 x 10 = 40

 

  1. Outline the gelling mechanism and the experimental procedure to harvest crystals in a
    Gel by chemical reaction and solubility reduction techniques.
  2. Describe the experimental set up to determine crystal structure by powder XRD
    method.
  3. Explain different types of elastic behaviour and discuss the atomic model of elastic
    behaviour.
  4. a) Why the ferromagnetic materials exhibit hysteresis? Explain.
  5. b) How is water photoelectrocatalytically splitted using SrTiO3 electrode? (5+5)
  6. Describe the preparation and structure of one, two and three dimensional compounds
    with one example for each.
  7. a) Explain any two uses of GMR materials.
  8. b) What are soft and hard magnets? Give any five differences.    (5+5)

 

 

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Loyola College M.Sc. Chemistry Nov 2012 Material Science Question Paper PDF Download

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

M.Sc. DEGREE EXAMINATION – CHEMISTRY

SECOND SEMESTER – NOVEMBER 2012

CH 2901 – INSTRUMENTAL METHODS OF CHEMICAL ANALYSIS

 

 

Date : 06/11/2012            Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

PART A

Answer all the questions:                                                                   10×2=20 Marks

 

  1. Define molarity.
  2. State Beer Lambert’s law.
  3. Calculate the pH of 0.01N NaOH.
  4. What is Buffer solution? Give an example.
  5. Mention the principle of HPLC.
  6. State Bragg’s law.
  7. Give an example for Mc-Lafferty rearrangement.
  8. Mention the significance of finger print region in IR spectroscopy.
  9. Define gyroscopic motion.
  10. How many ml of conc.HCl (density = 1.18 g/ml, 36.0 wt% HCl, MW = 36.5) should be diluted to 1litre to produce a 0.100 M solution?

 

PART B

Answer any eight questions:                                                                        8×5=40 Marks

 

  1. What are the requirements of a primary standard?
  2. How is sulphate determined by turbidometry?
  3. Discuss the significance of PMT.
  4. Explain the analysis of riboflavin by spectroflurometry.
  5. Write a short note on circular dichroism with an example.
  6. How is ion selective electrode helpful in the analysis of fluoride in drinking water?
  7. Draw and explain the working principle of a thermal conductivity detector.
  8. Briefly explain the instrumentation of EPR.
  9. Explain the fragmentation pattern of decane.
  10. Discuss the absorption bands of functional groups in IR spectrum.
  11. Explain the method of single crystal XRD determination.
  12. Write short notes on detectors used in HPLC.

 

 

PART C

Answer any four questions:                                                                4×10=40 Marks

 

  1. Draw and explain the working principle of dark beam spectrophotometer.
  2. Briefly discuss the instrumentation of AAS.
  3. a) Explain the instrumentation of turbidometry.
  4. b) How is phosphate determined by turbidometry.
  5. Draw the block diagram and explain the instrumentation of GC.
  6. Explain the fragmentation pattern of
  7. a) benzyl alcohol
  8. b) pentanoic acid
  9. Briefly explain the instrumentation of NMR with a block diagram.

 

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Loyola College B.Sc. Physics Nov 2010 Material Science Question Paper PDF Download

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

   B.Sc. DEGREE EXAMINATION – PHYSICS

FIFTH SEMESTER – NOVEMBER 2010

PH 5405 / 5402 – MATERIAL SCIENCE

 

 

 

Date : 11-11-10                     Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

Section – A

Answer all the questions:                                                                                          (10×2 = 20)

  1. Define primary and secondary bonds.
  2. Give two methods for determining electronic structure.
  3. Define space lattice and basis.
  4. Distinguish between ionic and covalent bond.
  5. What is meant by true stress and true strain? Give the power relation connecting them.
  6. Give the expression for Young’s modulus of a composite material.
  7. Define Curie temperature.
  8. Distinguish between hard and soft magnetic materials.
  9. Give the principle of X-ray and Gamma ray radiographic techniques.
  10. Define magnification power of a microscope.

 

Section – B

Answer any four questions:                                                                                     (4×7.5 = 30)

  1. Discuss stable, unstable and metastable states with the help of a tilting rectangular block.
  2. Outline the theory of ferroelectrics using the structure of Barium Titanate as an example.
  3. (a) Find the Miller Indices of a plane in an orthorhombic unit cell (a:b:c = 1:2:3) making intercepts of 3,2,1 A ­­­0 on a,b,c axes respectively.

(b) The Bragg angle corresponding to the first order reflection from (1,1,1) planes in a crystal is 300 when X – rays of wavelength 1.75A0 are used. Calculate the interatomic distance, ‘a’.

  1. Discuss “elastic modulus as a parameter in design”.
  2. Describe the ultrasonic method of NDT with neat sketch and mention its advantages over other methods of NDT.

Section – C

Answer any four questions:                                                                                     (4×12.5 = 50)

  1. Discuss in detail, the three important steps involved in the formation of ionic bond with specific reference to NaCl crystal.
  2. Outline the atomic model of elastic behaviour. Obtain the relation between Young’s modulus (Y), Bulk modulus (K), Rigidity modulus (G), and Poisson’s ratio (µ).
  3. Draw the sketch of a scanning electron microscope and discuss its working.
  4. Discuss in detail, various point defects in crystals.
  5. Explain different types of polarization and derive the expression for the total polarization of a material.

 

 

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Loyola College B.Sc. Physics Nov 2012 Material Science Question Paper PDF Download

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

FIFTH SEMESTER – NOVEMBER 2012

PH 5405 – MATERIAL SCIENCE

 

 

Date : 10/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

PART – A

Answer ALL questions:                                                                                                            (10×2=20)

  1. Why do solids expand on heating?
  2. State Why ionic and covalent bonded solids are bad conductors of heat and electricity?
  3. State Bragg’s law of X-ray diffraction.
  4. What is Frenkel defect?
  5. What are elinvars?
  6. What is meant by work – hardening?
  7. Mention the popular radiographic methods of NDT.
  8. Draw the schematic diagram of metallurgical microscope.
  9. How are materials classified according to their magnetic susceptibility?
  10. State why ferroelectric materials exhibit hysteresis?

PART – B

Answer any FOUR questions            :                                                                                               (4×7.5=30)

  1. Write a note on secondary bond formation in different kinds of materials.
  2. With neat sketches discuss the formation of edge and screw dislocations.
  3. Draw the stress – strain curve for a plastic material and explain the various regions of interest. Why does the experimental result deviate from the theoretical one for large stress?
  4. With schematic diagram describe how ultrasonic method is effective in detecting cracks and cavities in a material. What are the advantages of the method?
  5. Write notes on ferro, ferri and antiferro magnetic materials.

PART – C

Answer any FOUR questions:                                                                                               (4×12.5=50)

  1. Demonstrate with the necessary potential energy curve, the different equilibriums of a tilting rectangular block.
  2. What is meant by enthalpy of formation? How does imperfection affect the enthalpy of the system? Obtain an expression for the concentration of crystal imperfections in terms of the enthalpy of formation.
  3. With necessary diagram, discuss the atomic model of elastic behavior and obtain the relation connecting Young’s modulus Y, rigidity modulus K, bulk modulus G and Poisson’s ratio σ.
  4. Draw the sketch of a scanning electron microscope and discuss its working.
  5. What is meant by polarization? What are the different kinds of polarization? Explain their frequency dependence with suitable diagram.

 

 

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