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.Management Sciences
Category: Nuclear Power Engineering
Thermal neutrons which are used to cause the fission of U-235 have energy _____________ eV?
0
A. < 0.025
B. > 1
C. 1-25
D. > 200
Heavy water used in the nuclear reactors to slow down the speed of neutrons is __________________?
A. Highly purified water
B. A compound of oxygen and deuterium
C. Water having dissolved salts of heavy metals
D. None of these
Primary purpose of a ____________ nuclear reactor is to supply a high neutron flux of the order of 1013 to 1014neutrons/cm2 second?
A. Research
B. Power
C. Breeder
D. Homogeneous
Extraction of uranium from its ore is done using ______________ methods?
A. Electrometallurgical
B. Pyrometallurgical
C. Chemical
D. Physical beneficiation
Which of the following is not used as a moderator in nuclear reactor ?
A. Molten sodium
B. Light water
C. Beryllium
D. Boron hydride
Uranium is recovered from its ore (pitchblende) by________________?
A. Froth floatation technique
B. Leaching with sulphuric acid
C. Smelting in a furnace
D. Dissolving in water
Graphite is used in nuclear reactor as_____________________?
A. Insulation lining of the reactor
B. Fuel
C. Lubricant
D. Retarder of neutron velocity
The phenomenon of radioactivity was discovered by___________________?
A. Madam Curie
B. Becquerel
C. Roentgen
D. J.J. Thomson
β-rays emission in radioactive disintegration is always accompanied by the emission of____________________?
A. γ-rays
B. α-rays
C. Neutrons
D. None of these
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