A) 140Ba B) 131I C) 99Tc D) 137Cs
A) It increases the rate of oxidation. B) It causes radioactive decay of the steel. C) It dissolves the steel surface entirely. D) It forms a corrosion-resistant layer.
A) It increases the durability of nuclear reactors during operation. B) It prevents the accumulation of iodine. C) It retards the release of 99Tc from nuclear waste. D) It makes the steel radioactive.
A) Evacuation B) Consuming perchlorate tablets C) Taking potassium iodide D) Using fallout shelters
A) Plutonium B) Gold C) Xenon D) Lead
A) 131I and 140Ba B) 141Ce and 95Zr C) 144Ce/144Pr D) 90Sr and 137Cs
A) Only some elements are released from a reactor. B) Reactors do not produce fission products. C) Detonations destroy all fission products. D) The uranium fuel is different in every case.
A) Thyroid cancer B) Lung damage C) Liver failure D) Bone marrow depletion
A) It causes the radioiodine to be excreted immediately. B) It saturates the thyroid with stable iodine. C) It forms a protective coating on the thyroid gland. D) It chemically neutralizes the radiation.
A) Antioxidant B) Goitrogen C) Catalyst D) Carcinogen
A) Hyperthyroidism B) Hypothyroidism C) Thyroid cancer D) Acute thyroiditis
A) 1 year B) 80–90 days C) 10–20 days D) 30–40 days
A) It is the first line of defense. B) Potassium iodide is safer and more effective. C) Perchlorate is illegal to use. D) Perchlorate does not block iodine uptake.
A) Iodine-131 B) Xenon-135 C) Strontium-90 D) Technetium-99
A) To generate delayed neutrons for power B) To increase the rate of fission product decay C) To convert xenon-135 into stable cesium D) To balance neutron production and absorption rates
A) Fukushima B) Windscale C) Chernobyl D) Three Mile Island
A) Iodine-131 and barium-140 B) Strontium-90 and cesium-137 C) Technetium-99 and ruthenium-106 D) Cerium-144 and promethium-147
A) Cerium-144/praseodymium-144 and ruthenium-106/rhodium-106 B) Technetium-99 and zirconium-95 C) Iodine-131 and barium-140 D) Strontium-90 and cesium-137
A) Cesium-137 B) Promethium-147 C) Strontium-90 D) Technetium-99
A) Promethium-147 and technetium-99 B) Cerium-141, zirconium-95/niobium-95, and strontium-89 C) Cesium-134 and cesium-137 D) Iodine-131 and barium-140
A) 200% B) 250% C) 150% D) 100%
A) Alpha emission B) Neutron absorption C) Ternary fission D) Radioactive decay
A) Zinc through lanthanides B) Helium through lithium C) Hydrogen through iron D) Uranium through fermium
A) 50 through 70 B) 160 through 180 C) 130 through 145 D) 85 through 105
A) 40 through 60 B) 130 through 145 C) 190 through 210 D) 85 through 105
A) 238U B) 241Am C) 239Pu D) 232Th
A) High thermal pressure B) Shell effects C) Isotopic instability D) Neutron bombardment
A) Yes B) No C) Only for thermal neutrons D) Only for actinides
A) As a continuous duration B) As an infinite interval C) As a single moment D) As a series of stages
A) Helium-4 B) Tritium C) Hydrogen-1 D) Carbon-12
A) Electron capture only B) Beta decay C) Alpha decay D) Proton emission
A) Heavy uranium isotopes B) Protons C) Helium nuclei D) Antineutrinos
A) Strontium-90 B) Strontium-89 C) They have the same half-life D) Neither is radioactive
A) 87 percent B) 99 percent C) 10 percent D) 50 percent
A) Two B) Seven C) Fifty D) None
A) Beta radiation B) Alpha radiation C) Neutron radiation D) Gamma radiation
A) Alpha radiation B) Beta radiation C) Heavy ion radiation D) Proton radiation
A) 1.5 tonnes B) 0.5 tonnes C) 5 tonnes D) 10 tonnes
A) About 50% B) About 10% C) About 1% D) About 3%
A) Krypton-90 B) Xenon-137 C) Caesium-137 D) Bromine-87
A) Activation products B) Stable isotopes C) Fission products D) Actinides
A) Xenon-137 B) Iodine-129 C) Bromine-87 D) Caesium-137
A) Strontium-90 B) Caesium-137 C) Iodine-129 D) Krypton-90
A) High pressure in the core B) Spontaneous fission C) Cosmic ray bombardment D) Holes in the fuel cladding
A) 30 years B) 100 years C) 10 years D) 50 years
A) Phosphorus B) Fertilizers containing potassium C) Prussian blue D) Lime
A) Construction chemical grade B) Industrial dye grade C) A special grade D) Paint pigment grade
A) Prussian blue B) Nitrogen C) Potassium D) Lime
A) Ingestion B) Skin contact C) Inhalation D) Injection |