A. Heating it
B. Cooling it
C. Surrounding it by neutron reflecting material
D. Surrounding it by neutron absorbing material
Related Mcqs:
- “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 these - “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 these - Quantity of fissionable material (i.e. U-235) in natural uranium is _____________ percent?
A. 0.71
B. 6.31
C. 99.29
D. 12.73 - The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron?
A. 159
B. 1837
C. 2537
D. 10000 - Thorium-232 (a fertile material) on absorption of a neutron gets converted into ___________ , which is a fissile material?
A. Thorium-233
B. Uranium-235
C. Uranium-233
D. Plutonium-239 - The half life period of a radioactive element is 100 days. After 400 days, one gm of the element will be reduced to ______________ gm?
A. 1/4
B. 1/8
C. 1/2
D. 1/16 - 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 - Neutrons have mass approximately equal to that of _____________ atoms?
A. Hydrogen
B. Helium
C. Deuterium
D. None of these - The sum of masses of two nuclei produced in nuclear fission compared to the mass of original nucleus is_____________________?
A. Less
B. More
C. Same
D. Much more - Energy equivalent to one atomic mass unit (amu) is ______________ MeV?
A. 9.31
B. 93.1
C. 931
D. 9310
