Percentage of heavy water in ordinary water is around__________________?
Percentage of heavy water in ordinary water is around__________________?
A. 0.015
B. 7.54
C. 0.71
D. 32.97
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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-232A radioactive substance does not emit________________?
A radioactive substance does not emit________________?A. α-ray
B. Proton
C. Position
D. β-rayNuclides having the same atomic numbers are termed as___________________?
Nuclides having the same atomic numbers are termed as___________________?A. Isotopes
B. Isomers
C. Isotones
D. IsobarsWhich of the following ores contains maximum percentage of uranium ?
Which of the following ores contains maximum percentage of uranium ?A. Carnotite
B. Thorium
C. Rescolite
D. PitchblendeNuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher _____________________?
Nuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher _____________________?A. Melting point, hence can be subjected to higher temperature
B. Density; hence core volume for a given power output would be smaller
C. Resistance to effects of irradiation
D. All A., B. and C.Critical energy should be _______________ the neutron binding energy of the atom in order to initiate a nuclear fission?
Critical energy should be _______________ the neutron binding energy of the atom in order to initiate a nuclear fission?A. Equal to
B. Less than
C. More than
D. Either more or less