1. The unit vector morthogonal to both l +Ii is

A.


B.


c.

t+J-Tc
D.

2. If [lll]is the Burgers vector of a dislocation in bee lattice, the magnitude ofthe Burgers vector is
A. a

a{3
B.
2
a{3
c.
4


D. a{3
3. The ability of a material to absorb energy in the plastic range during tension test is defined as
A. Toughness
B. Resilience
c.
Malleability

D.
Selfenergy.


4. The unit of entropy is
A. Joule/K
B. Dynes/K
c.
Calorie

D.
Pascal


2

5. The first law ofthermodynamics is represented by
A. dQ=TdS
B. dQ=dU+dW
C. PV constant
D. PV=nRT
6. A material which develops a voltage when subjected to mechanical compression, twisting or distortion is known as
A. Piezoelectric material
B. PYroelectric material
C. Magnetostrictive material
D. Ferroelectric material
7. The units ofmagnetic flux density are
A. Ampere
B. Weber
C. Tesla
D. Faraday
8. Which one ofthe following elements has the -highest electro-negativity?
A. Arsenic
B. Bismuth
C. Calcium
D. Phosphorous
9. Selenium is
A. Intrinsic semiconductor
B. Extrinsic semiconductor
C. p-type semiconductor
D. n-type semiconductor

10. The vectors l and V l-J
A. Are perpendicular to each other
B. Are parallel to each other
C. Make an angle of 30° between them
D. Make an angle of45° between them
11. Bonding between water molecules is
A. Ionic
B. Hydrogen bonding
C. Metallic
D. Covalent bonding
12. Which ofthe following statements is true?
A. Dislocations are non equilibrium defects
B. Stacking faults are equilibrium defects
C. Vacancies are non equilibrium defects
D. None ofthe above
13. In the hard sphere model, the density ofa body centred cubic metal with atomic radius R run and mass of atom M is
9M 3
A. 4R3

B.
32R3 run
9M (g1
C.
8R3 mm
3M (g1
D.
4R3 nm
14. Which one ofthe following elements has the lowest ionization'energy?
A. Pb
B. Sr
C. B
D. Ai
15. What is the atomic characteristic that determines the element?
A. Number of protons
B. Number of neutrons
C. Number of mesons
D. The mass
16. How much ofthe total volume is occupied by hard spheres in contact in a BCC arrangement?
A.
6

B. -V31!.
6
C. .J31!.
8
D. .J31!.
4
17. Cermet is a
A. Polymer
B. Metal
C. Ceramic
D. Combination of ceramic and metal
18. In arc welding, dark glass is used to protect eye from
A. X-rays
B. Gamma rays
C. Infra red rays
D. 'Visible and ultra-violet rays
19. An example of amorphous material is
A. Zinc
B. Lead
C. Glass
D. Brass
5

20. With increase in temperature, the surface tension ofwater above 40 C
A. Increases
B. Decreases
C. Remains constant
D. Increases linearly
oG .
21. iJp at constant temperature IS:
A. Entropy
B. Negative entropy
C. Volume
D. Negative ofvolume
22. Which one is the 'Grignard Reagent'?
A. C2HSMgBr
B.
C. MgCh
D. Fe304
23. Which ofthe following stainless steels is non-magnetic?
A. Ferritic
B. Martensitic
C. Austenitic
D. None ofthese
24. Which one ofthe following processes is associated "'lith nano particle synthesis?
A.
B.
C.
D.
Sol-gel Melting Casting All the above
6
25. Rate detennining step in a reaction consisting of a number of steps in series is the
A. Fastest step
B. Slowest step
C. Intennediate step
D. Cannot be predicted
PART


26. Radiation shield in a nuclear power reactor is made of
A. Concrete
B. Aluminium alloys
C. Cobalt
D. Zircalloy
.1 l+x
27. is
£..,1. ..L At
A. 1
B. 0
C. 00
D. -00
28. Plasma sintering
A. Promotes fast grain growth
B. Ensures very limited grain growth
C. Decomposes the material
D. Is not recommended for production of nano-structured materials
29. Grain size distribution in nanomaterials is close to
A. Parabolic
B. Lognormal
C. Exponential
D. Bimodal
30. Closed pores in materials can be eliminated
A. By applying high temperature and low pressure
B. By applying high temperature
C. By applying high pressure and high temperature
D. By doping
8
31. The solution ordinary differential equation dy .;. satisfying the condition
dxx x
y is
A. lJx
B. 2Jx
C. x lJx
2
D. x
x
32. Fatigue limit is exhibited by
A. Copper alloys
B. Aluminium alloys
C. Mild steel
D. Magnesium alloys
33. Inverse Hall-Petch effect is seen in nanocrystalline metals when the grain size is
A. Less than 10 -15 nm
B. Above 100 nm
C. Between 15 nm and 100 run
D. Equal to 50 nm
34. Which ofthe following equations admit plane wave solution?

A. V2u= . a>O
cit
2 au
B. V a>O

C..Vu=O
VxVu 0

35. direction in a cubic crystal lies on the following planes
A. and
B. and
C. and
D. and
9
r

36. The Eigen values ofthe matrix M where c and s are real numbers
cs s
satisfying the condition c2 S2 1,are
A. oand 1
B. c2andS2
c.
cands

D.
oandcs


37. Fermi level ofa metal defines
A. The highest occupied level ofelectron energies at absolute zero
B. The lowest occupied level ofelectron energies at absolute zero
C. The highest occupied level ofelectron energies at room temperature
D. The band gap in an intrinsic semi-conductor
38. Resolution ofa scanning electron is determined by the
A. Wavelength ofthe electron beam
B. Objective lens
C. Condenser lens
D. Beam size
39; Quenching ofplain carbon steel is a process that
A. Softens the material
B. Produces Pearlite
C. Hardens the material
D. Spherodizes the carbides
40. Ifthecoordinationnumbers oftwounitcellsaresame,theybothwillhavesimilar
A. Atomic weight
B. Ductility
C. Packing factor
D. Density
10

41. Age hardening occurs in alloys because of
A. Excess vacancies in the system
B. Excess solutes above solubility limit nucleating as precipitates
C. Solid solution of solutes
D. Small grain size
42. Softironisused ascoreoftransformersbecause ofits
A. Low hysteresis loss and low permeability
B. Low hysteresis loss and high permeability
C. High hysteresis loss and low permeability
D. High hysteresis loss and high permeability
43. The change ofmagnetic susceptibility ofa material when subjected to mechanical stress is known as
A. Villari effect
B. Thompson effect
C. . Curie effect
D. Bitter powder effect
44. Izod test is used to measure
A. Shear strength
B. Impact strength
C. Tensile strength
D. Compressive strength
45. One ofthe following is a microstructure-sensitive property
A. Density
B. Melting point
C. Yield stress
D. Coefficient ofthermal expansion
11

46. Which bond is not present in all the three states of matter?
A. Vander Waals' bond
B. Ionic bond
C. Covalent bond
D. Metallic bond
47. For a simple cubic lattice d1oo:duo:du1 equals to
A.
B.
C.
D.
{2:V3:..J6 V3:V3:..J6 -v6:V3:V2 v3: -v6:.J2
48. The electronic specific heat in non-metals is
A. Infinity
B. Negative and very high
C. Positive and very high
D. Negligible
49. Induction hardening is the process of
A. Increasing hardness throughout
B. Hardening the core .C. Hardening ofsurface ofwork-piece
D. Hardening the precipitates
SO. Ferromagnetic alpha iron exists in the temperature
A. Range of 910 -1400°C
B. Above 1539°C
C. Below 770° C
D. Range of 1400 -1539°C
12
51. The property ofcorrosion resistance in stainless steel is due to
A. Predominatingnature ofironpresentinstainlesssteel
B. The formation of atmosphere of oxygen and moisture on the surface
C. The formation of a thin film of Cr203 on the surface of steel
D. The inherent property ofchromium to resist corrosion
52. With increase in porosity, thermal spalling resistance offireclay brick
A. Increases
B. Decreases
C. Remains same
D. May increase or decrease
53. X-rays ofwavelengili 1.75 Aare diffracted by planes in a cubic crystal at an angle 30° in the first order. Calculate the interatomic spacing.
A. 3.03 A
B. 3.75 A
C. 3.78 A
D. 3.5A
54. The dimensionality of Bulk Modulus of Elasticity is same as that of
A. Pressure
B. Density
C. Force
D. None ofthese
- .
55. As the temperature increases, the electrical resistivity of geffilanium
A. Increases exponentially
B. Decreases
C. Does not vary
D. Increases linearly

56. The average amplitiide:ofvibrations ofAI atoms at its melting point (660° is 0.3sA. Lattice parameter.ofAI is4.04 AO. What percentage is the average amplitude with respect to interatomic spacing in AI?
A. 10%
B. 12%
C. 14%
D. 16%
57. Which ofthe following statements is correct at room temperature (Dg and DI represent grain boundary lattice diffusivities respectively)
A. Dg<DI
B. Dg>Dt
C. Dg=Dt
D. Dg/Dl 00
58. Which ofthe following statements is
A. Single crystal contains dislocations
B. Single crystal contains grain boundaries
C. Single crystal contains vacancies
D. Single crystal contains stacking faults
59. Intergranular corrosion occurs
A. Within the
B. Along grain boundaries
C. At the surface
D. . In the bulk of material
60. Na atoms exhibit more pronounced chemical activity than Na ions because
A. Na ions have closed shells, while Na atoms each have a single outer electron
B. Na atoms have closed shells, while Na ions each have a single outer electron
C. Na ions have three outer electrons
D. Na ions have five outer electrons

61. At frequencies --5x1014 Hz, the ionic polarization dielectric materials becomes
A. Negative
B. Unity
C. Infinity
D. Zero
62. Which type ofbond is formed during sintering?
A. Diffusion bond
B. Solid state bond
C. Slag or glass bond
D. All ofthe above
63. Cobalt in steel
A. Improves wear resistance .cutting ability and toughness
B. Gives ductility, toughness, tensile strength and anti-corrosion properties
C. Improves cutting ability and reduces hardenability
D. None ofthe above
64. Stress is
A. A vector
B. A tensor
C. A scalar
D. Dimensionless unit
65. Whichofthefollowingprocessisnotrelated toimprovingthefatigueresistance?
A. Shot peening
B. Cold extrusion
C. Sand blasting
D. Drop forging

66. The technique which can be used for the direct observation of dislocations is
A. Scanning electron. microscopy
B. Transmission electron microscopy
C. Scanning tunneling microscopy
D. Electron probe micro analysis
67. Which ofthe following statements is true?
A. For isentropic and reversible process, dQ 0
B. For isentropic and reversible process, dQ 0
C. For isentropic and irreversible process, dQ
D. For isentropic and reversible process, dQ
68. Dislocation cross-slip is difficult in those materials which have
A. Large number of slip systems
B. High work-hardening rate
C. Coarse grain size
D. Low stacking fault energy
69. Ajet engine turbine blade is normally manufactured by
A. Forging
B. Shell moulding
C. Investment casting
D. Pressure die casting
70. Thennoplastic materials are produced by
A. Diecasting process
B. Shell moulding process
C. Cold forming process
D. Injection moulding process
16
71. For good dimensional stability at high temperatures, a material should have
A. Fine grain size alone
B. Coarse grain size alone
C. Fine grain size with large precipitates at grain boundaries
D. Coarse grains and fine precipitates pinning the grain boundaries
72. Which ofthe following is not a colligative property?
A. Osmotic pressure
B. Depression offreezing point
C. Lowering ofvapor pressure
D. None ofthe above
73. Nickel at room temperature is
A. Ferroelectric
B. Paramagnetic
C. Ferromagnetic
D. Dielectric
74. Sea water in comparison with fresh water
A. Is less corrosive
B. Is more corrosive
C. Shows same degree of corrosion
D. None ofthe above
75. Schottky defect is
A. Extra atom in interstitial site
B. Atom missing from correct lattice site
C. Atom displaced to interstitial site creating nearby vacancy
D. Row ofinterstitials
17