chemical engineering nuclear power engineering MCQs – Page 4

Practise multiple-choice questions from chemical engineering nuclear power engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering nuclear power engineering Mcqs

61. Velocity of the thermal neutron (< 0.025 eV) used for fission of U-235 is around _____________ m/sec?
0

A. 2200

B. 9 1021

C. 3 1011

D. 1

62. In the gaseous diffusion process of uranium enrichment, the natural uranium is converted into gaseous ________________?
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A. Uranium oxide

B. Uranium carbide

C. Uranium hexafluoride

D. Uranium sulphate

63. In a nuclear explosion, the energy is released primarily in the form of _____________ energy?
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A. Thermal

B. Potential

C. Kinetic

D. Electrical

64. Radioactivity of an isotope is expressed in______________________?
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A. MeV

B. Ergs

C. Curie

D. Barn

65. Artificially produced radioactive isotopes are used for____________________?
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A. All A., B. and C.

B. Initiating nuclear fission and fusion

C. Treatment of certain diseases

D. Power generation

66. Which of the following is not a good moderating material ?
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A. 18/8 stainless steel

B. Concrete

C. Boron

D. All A., B. and C.

67. Heavy water (D2O) in a nuclear reactor serves as a_______________?
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A. Coolant

B. Moderator

C. Both A. & B.

D. Neutron absorber

68. Which of the following accounts for the maximum energy release in the nuclear fission process ?
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A. Kinetic energy of fission products

B. Radioactive decay of fission products

C. Instantaneous release of ?-rays

D. Kinetic energy of neutrons

69. A homogeneous reactor is the one, in which the___________________?
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A. Same substance (e.g. heavy water) is used as moderator & coolant

B. All A., B. and C.

C. Fissile atoms are evenly distributed throughout the mass of nuclear reactor

D. The fuel and the moderator is mixed to form a homogeneous material

70. Pressure of CO2 gas (which is a coolant) in the Calder-Hall nuclear reactor is ______________ kgf/cm2?
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A. 35

B. 7

C. 50

D. 0.2

71. Which of the following is not used as a nuclear fuel cladding material ?
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A. Cadmium

B. Zircaloy

C. Ceramics

D. Stainless steel

72. Which of the following is a moderating material used in nuclear reactor ?
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A. Zircaloy (an alloy of zirconium and aluminium)

B. Stainless steel

C. Graphite

D. Cadmium

73. The size of an atom is of the order of one __________________?
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A. Micron

B. mm

C. Fermi

D. Angstrom

74. Extraction of uranium from its ore is done by ______________ method?
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A. Pyrometallurgical

B. Chemical

C. Electrometallurgical

D. Physical beneficiation

75. Fast breeder reactors are most usable in India, because of our largest _____________ deposits?
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A. Plutonium

B. Thorium

C. Uranium

D. None of these

76. Gas cooling as compared to water cooling of nuclear reactors___________________?
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A. None of these

B. Can produce only saturated steam for feeding to power turbine

C. Is more efficient as gas has a higher specific heat

D. Cannot attain a high temperature

77. The half life period of a radioactive element is 100 days. After 400 days, one gm of the element will be reduced to ______________ gm?
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A. 1/16

B. 8-Jan

C. 4-Jan

D. 2-Jan

78. Ordinary water is not used as a moderator because, it___________________?
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A. Has a low absorption cross-section

B. Does not absorb neutrons

C. Absorbs neutrons

D. Has a low scattering cross-section

79. The number of neutrons in the nucleus of Uranium-233 (92U233) is _________________?
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A. 92

B. 325

C. 141

D. 233

80. Heavy water is used as a moderator in a _____________________?
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A. Pressurised water reactor (PWR)

B. Candu reactor

C. Boiling water reactor (BWR)

D. Molten sodium cooled reactor

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