Odisha CPET 2022 Question Paper Material Science

ODISHA
CPET

QUESTION PAPER
2022
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COMMON P.G. ENTRANCE TEST–2022 (CPET-2022)

Subject Code : 68 Test Booklet No.:

Entrance Subject : Material Science Hall Ticket No.:

TEST BOOKLET

Time Allowed : 90 Minutes Full Marks : 70

INSTRUCTIONS TO CANDIDATES
1. Please do not open this Question Booklet until asked to do so.
2. Check the completeness of the Question Booklet immediately after opening.
3. Enter your Hall Ticket No. on the Test Booklet in the box provided alongside. Do not write
anything else on the Test Booklet.

up Test Booklet Serial No. & OMR Answer Sheet Serial No. in the Attendance Sheet carefully.

5. Each question has four answer options marked (A), (B), (C) & (D).
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as wrong answer.
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13. The candidate is required to handover the original OMR sheet to the invigilator and
take the question booklet along with the candidate’s copy of OMR sheet after completion
of the test.
14. Sheet for rough work is appended in the Test Booklet at the end.

W-Material Science-68 P.T.O.

1. If resistance of a material increases with temperature, the material is a…….

(A) Metal

(B) Semi-conductor

(C) Non-metal

(D) All of these

2. The net electric charge inside an isolated system remains constant. This is known as

(A) Law of conservation of energy

(C) Coulomb’s second law

(D) Law of conservation of charge

3. Why sky appear blue

(A) Much more red light than blue light is absorbed by air atoms.

(C) Higher energy light waves have more penetration through the atmosphere.

(D) Blue light is scattered to a greater extent than red light.

4. The Fresnel Equations: (I) are a consequence of Maxwell’s equations; (II) imply a

(A) (I), (II), and (III) all the false

(B) (I),(II), and (III) all are true

(C) Only (I) is true

(D) Only (I) is false

5. What is the distance between two convex lenses LA and LB with focal length FA and
FB ?

(A) FA – FB

(B) FA + FB

(C) FA

(D) FB
W-Material Science-68 2

6. If a parallel beam of light is incident on a convex lens, all the rays after refraction
through the lens…..

(A) Approach one another and converge at a point

(B) Move away from one another

(C) Move parallel to the principal axis

(D) None of these

7. The point of intersection of the principal plane with the axis of the lens is called….

(A) The optical center of the lens

(B) Pole of the lens

(C) Focus

(D) Radius of curvature

8. To prevent a DC return between source and load, it is necessary to use

(A) Resistor between source and load,

(B) Inductor between source and load

(C) Capacitor between source and load,

(D) Either (A) or (B)

9. The action of JFET in its equivalent circuit can best be represented as a

(A) Current controlled current source

(B) Current controlled voltage source

(C) Voltage controlled voltage source

(D) Voltage controlled current source

at …………………….

(A) The edge of the depletion region on the p side

(B) The edge of the depletion region on the n side

(C) The pn junction

(D) The center of the depletion region on the n side

W-Material Science-68 3 P.T.O.

11. The force between two charges is 120 N. If the distance between the charges is
doubled, the force will be

(A) 60 N

(B) 30 N

(C) 40 N

(D) 15 N

12. The lines of force due to charged particles are

(A) Always straight

(B) Always curved

(C) Sometimes curved

(D) None of the above

13. If three 15 uF capacitors are connected in series, the net capacitance is

(A) 5 uF

(B) 30 uF

(C) 45 uF

(D) 50 uF

(A) Scalar 2

(B) Vector

(C) Both (A) and (B)

(D) None of the above

15. The dimensional formula for moment of inertia of a body is______

(A) L0M1T-2

(B) L2M1T0

(C) L1M1T-1

(D) L0M2T-1

W-Material Science-68 4

16. The moment of inertia of a body does not depend upon the________

(A) Mass of the body

(B) Position of the axis of rotation

(C) Distribution of the mass

(D) The angular acceleration of the body

17. The SI unit of torque is_______

(A) N-m-1

(B) N-m2

(C) N-m

(D) N2-m

18. The physical quantity in translational motion, which is analogous to moment of
inertia in rotational motion is________

(A) Velocity

(B) Force

(C) Energy

(D) Mass

19. The mass of an electron in motion depends upon

(A) Direction of motion

(B) its velocity

(C) its shell number

(D) All of these

(A) 3

(B) 5

(C) 7

(D) 2

W-Material Science-68 5 P.T.O.

21. The

m/h3
2

(B) h2 2
mr

(C) h2 2
m2r3

(D) m2h2 r
2 3

22. The temperature T at a three dimensional surface S is given by

2
+Y2-Z

such that the mosquito cools at the fastest rate, will be

(A) i + j – k

(B) 2i + j – k

(C) i +2 j – k

(D) -8i - 8j + k

23. De-Broglie wavelength of a material particle having a kinetic energy, E is proportional
to

(A)

(B)

(C) E

(D)

24. The equation of motion of matter wave was derived by:

(A) Heisenberg

(B) Bohr

(C) de-Broglie

(D) Schrodinger

W-Material Science-68 6

25. If the momentum of a particle is increased to four times, then the de-Broglie
wavelength will become:

(A) two times

(B) four times

(C) half times

(D) one-fourth times

26. The Phenomenon of ejection of electron from metal surface when light of suitable
frequency falls on it is known as

(A) Compton effect

(B) Photoelectric effect

(C) Raman effect

(D) None of these

(A) 3s

(B) 3p

(C) 3d

(D) 3f

28. The concept of matter wave was suggested by_________

(A) Heisenberg

(B) de Broglie

(C) Schrodinger

(D) Laplace

(B) unity

(D) double

W-Material Science-68 7 P.T.O.

(D) complex
31. Plank’s constant has unit
(A) J
(B) S
(C) JS-1
(D) JS
32. To solve Schrodinger wave equation we need potential,
(A) Physical requirement of system
(B) Boundary condition
(C) Both (A) and (B)
(D) All of these
33. The energy spectra of bound state is
(A) Continuous
(B) Discrete
(C) Degenerate
(D) Non-degenerate
34. The plot between intensity vs. 2 is observed in
(A) XRD
(B) Raman Spectrum
(C) UV-VIS spectroscopy
(D) FTIR
35. For a non-relativistic free particle, the phase velocity (vp) and group velocity (vg) is
related as:
(A) Vp g

(B) Vp /2
g

(C) Vp g

(D) None of these
W-Material Science-68 8

36. According to wave mechanics, a material particle is associated with :

(A) a single wave

(B) a wave packet

(C) progressive wave

(D) light wave

37. Find the value of [Lx Ly]

(A) ihLx

(B) ihLy

(C) –hL

(D) ihL

38. Which of the following is the Eigen function of momentum operator?

(A) eikx

(B) 3x2

(C) sinx

(D) None of these

39. What is the rate of formation of X2 in the following reaction?

2X3 3X2

(A) 2r

(B) r

(C) 3r

(D) None of these

Where, r stands for rate of the reaction.

40. Which of the following is not true for rate of a reaction?

(A) Rate increases with temperature

(B) Rate of a reaction is always the slowest step

(C) Rate is independent of temperature

(D) Rate is an experimental quantity.
W-Material Science-68 9 P.T.O.

(A)

(B)

(C)

(D) None of these

42. Heat absorbed at constant volume is what?

(A) Internal energy

(B) Enthalpy

(C) Entropy

(D) None of these.

43. Heat absorbed at constant pressure is what?

(A) Internal energy

(B) Enthalpy

(C) Entropy

(D) None of these.

universe
for a reversible process is?

(A) Zero

(C) Less than Zero

(D) None of these.

45. Which of the following complex has maximum number of unpaired electron?

(A) [Mn(CN)6]4-

(B) [Cr(CN)6]4-

(C) [RhF6]3-

(D) [Fe(CN)6]4-

W-Material Science-68 10

46. Which of the following complex have minimum value of magnetic moment?

(A) [RuF6]3-

(B) [Cr(CN)6]4-

(C) [Ti(H2O)6]+2

(D) [NiF6]2-

47. Which one of the following is the correct ground state term symbol of high spin d5s1

(A) H4
3

(B) S4
2

(C) H1
2

(D) 6
S5/2

48. Which one of the following is the correct order of energy of splitting for tetragonal
compression?

(A) dxy > d > dx2-y2 > dZ2

(B) dxy < d < dx2-y2 < dZ2

(C) dxy > d 2 2
x -y
> dZ2

(D) dxy >dx2-y2 Z
2

49. To satisfy the 18 electron rule in the complex cycloheptatrieneMo(CO)3 the hapticity
of cycloheptatriene must be ?

(A) 2

(B) 4

(C) 6

(D) 5

50. How many types of allowed electronic transitions are possible in UV-VIS spectroscopy?

(A) 2

(B) 4

(C) 6

(D) 5

W-Material Science-68 11 P.T.O.

51. How many types of bending vibrations are possible in IR spectroscopy?

(A) 2

(B) 5

(C) 6

(D) None of these

following compounds; HCHO, CH3CHO, CH3COCH3?

(A) HCHO > CH3CHO > CH3COCH3

(B) HCHO < CH3CHO < CH3COCH3

(C) CH3COCH3 < CH3CHO < HCHO

(D) None of these

53. How many fundamental vibrations are there in CO2 molecule?

(A) 2

(B) 4

(C) 6

(D) 8

54. How many signals appeared in the proton NMR spectrum of CH3CH2OH ?

(A) 1

(B) 2

(C) 4

(D) 3

55. Which among the following molecule possess most acidic proton?

(A) CH3OH

(B) CH3COOH

(C)

(D) CH3CH2OH

W-Material Science-68 12

56. What is the unit of ‘b’ in the equation (P+an2/V2

(A) lit mol-1

(B) lit-1 mol-1

(C) lit atm mol

(D) None of these

57. The average distance travelled by a molecule between two successive collisions is
called-

(A) Average free path

(B) Partial free path

(C) Mean free path

(D) None of these

58. Real gases behave ideally at -----------

(A) Low temperature and high pressure

(B) Low temperature and low pressure

(C) High temperature and high pressure

(D) High temperature and low pressure

59. Association of molecules in water is due to

(A) Surface tension

(B) Viscosity

(C) Hydrogen bonding

(D) Optical activity

60. NaCl type crystal (with coordination no. 6 : 6) can be converted into CsCl type crystal
(with coordination no. 8 : 8) by applying

(A) High temperature

(B) High pressure

(C) High temperature and high pressure

(D) Low temperature and low pressure

W-Material Science-68 13 P.T.O.

61. How many chloride ions are surrounding sodium ion in sodium chloride crystal?

(A) 4

(B) 8

(C) 6

(D) 12

62. Alkali halids do not show Frenkel defect because

(C) Cations and anions have low coordination number

(D) Anions cannot be accommodated in voids

63. The maximum wavelength that a X-ray source can have in X-ray diffraction is

(A) d/2

(B) d

(C) 2d

(D) None of these

64. The number of atoms per unit cell of a face centred cubic crystal is

(A) 1

(B) 2

(C) 5

(D) 4

65. The coordination number of atoms in body centred cubic is

(A) 4

(B) 6

(C) 8

(D) 12

W-Material Science-68 14

(A) Weber

(B) Lumens

(C) Tesla

(D) Ampere

removed is known as

(A) Permeance

(B) Residual magnetism

(C) Reluctance

(D) Susceptance

68. Susceptibility is positive for……………….

(A) Non-magnetic substance,

(B) Diamagnetic substance,

(C) Paramagnetic substance,

(D) Ferromagnetic substance

(A) Krichhoffs law

(B) Ampere’s law

(D) None of these

70. Fuse wire should have

(A) High resistance, high melting point,

(B) High resistance, low melting point

(C) Low resistance, low melting point,

(D) Low resistance, high melting point

***

W-Material Science-68 15 P.T.O.

ROUGH WORK

W-Material Science-68 16