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.Management Sciences
Category: Nuclear Power Engineering
Water is a better coolant than a gas (like CO2, He, N2 etc.), because it_________________?
A. Is a better neutron moderator as well
B. Require comparatively smaller pumps and heat exchanger for a given heat transfer rate
C. Has a better heat transfer characteristics, and it can be pressurised to attain a high temperature
D. All A., B. and C.
Mass of a positron is same as that of a/an__________________?
A. Electron
B. α-particle
C. Proton
D. Neutron
Thorium-232 (a fertile material) on absorption of a neutron gets converted into ___________ , which is a fissile material?
A. Thorium-233
B. Uranium-235
C. Uranium-233
D. Plutonium-239
The radioisotope used to study the thyroid gland is__________________?
A. Iodine
B. Cobalt
C. Iron
D. Carbon
A nuclear reactor can’t be used for_________________?
A. The production of radioisotopes
B. Supplying intense fields or beams of neutron for scientific experiments
C. Marine ship propulsion
D. None of these
_____________ have the same mass number, but different nuclear charge ?
A. Isotopes
B. Isobars
C. Isotones
D. None of these
The disintegration rate of a radioactive element _______________?
A. Progressively increases
B. Progressively decreases
C. Remains constant throughout
D. May increase or decrease depending on the material
Nuclear reactors are provided with shield to guard against the emission of mainly _____________ rays?
A. X
B. α and β
C. Neutrons & gamma
D. Infrared
The decrease in the atomic number is not observed in case of________________?
A. Electron capture
B. β-emission
C. α-emission
D. Positron emission
In the gaseous diffusion process of uranium enrichment, the natural uranium is converted into gaseous ________________?
A. Uranium oxide
B. Uranium hexafluoride
C. Uranium carbide
D. Uranium sulphate
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