The decay product of tritium (a beta emitter) is_________________?
The decay product of tritium (a beta emitter) is_________________?
A. Lithium
B. Helium
C. Deuterium
D. Hydrogen
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The velocity of thermal (slow) neutrons triggering nuclear fission reaction (having energy equal to 0.025 eV) is about ______________ metres/second?
The velocity of thermal (slow) neutrons triggering nuclear fission reaction (having energy equal to 0.025 eV) is about ______________ metres/second?A. 1100
B. 2200
C. 3300
D. 4400Primary purpose of a ____________ nuclear reactor is to supply a high neutron flux of the order of 1013 to 1014neutrons/cm2 second?
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. HomogeneousA nuclear reactor can’t be used for_________________?
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 theseA radioactive substance does not emit________________?
A radioactive substance does not emit________________?A. α-ray
B. Proton
C. Position
D. β-rayWhich of the following isotopes is not present in natural uranium?
Which of the following isotopes is not present in natural uranium?A. U-238
B. U-234
C. U-235
D. U-232The function of moderators in nuclear reactor is to _________________?
The function of moderators in nuclear reactor is to _________________?A. Slow down the secondary neutrons
B. Absorb the secondary neutrons
C. Control the chain reaction
D. None of these