Which of the following is a non-fissile material ?
Which of the following is a non-fissile material ?
A. Plutonium-239
B. Uranium-235
C. Uranium-233
D. Thorium-232
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“Critical mass” is the minimum mass of nuclear fissile material required for the_______________________?
“Critical mass” is the minimum mass of nuclear fissile material required for the_______________________?A. Sustainment of chain reaction
B. Power generation on commercial scale
C. Economic power generation
D. None of theseThe mass number of an element is not changed, when it emits _______________ radiations?
The mass number of an element is not changed, when it emits _______________ radiations?A. α & β
B. β & γ
C. γ & α
D. α, β, & γThe emission of an a-particle causes the resultant nucleus to have____________________?
The emission of an a-particle causes the resultant nucleus to have____________________?A. More atomic weight and less atomic number
B. Less atomic weight and less atomic number
C. Less atomic weight and more atomic number
D. None of theseIsotopes of an element have different_________________?
Isotopes of an element have different_________________?A. Mass number
B. Electronic configuration
C. Nuclear charge
D. Chemical propertiesThermal shield is used in high powered nuclear reactors to__________________?
Thermal shield is used in high powered nuclear reactors to__________________?A. Protect the walls of the reactor from radiation damage
B. Absorb the fast neutrons
C. Slow down the secondary neutrons
D. Protect the fuel element from coming in contact with the coolantWhich one is the radioactive isotope of hydrogen ?
Which one is the radioactive isotope of hydrogen ?A. Deuterium
B. Ortho-hydrogen
C. Tritium
D. None of these