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Question 1 A nuclear reactor coolant — usually water but sometimes a gas or a liquid metal or _________ — is circulated past the reactor core to absorb the heat that it generates. molten salt
molten lava
asbestos
super-cooled electrons
Question 2 Most types of reactors are sensitive to a process variously known as xenon poisoning, or the _______ pit. freon
phosphate
isotope
iodine
Question 3 A kilogram of uranium-235 (U-235) converted via nuclear processes releases approximately ______________times more energy than a kilogram of coal burned conventionally. one million
two million
three million
four million
Question 4 Nuclear reactors convert the thermal energy released from___________. nuclear fusion
protons
nuclear fission
conductive energy
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