Percentage of U-238 in natural uranium is around__________________?
Percentage of U-238 in natural uranium is around__________________?
A. 0.71
B. 99.29
C. 0.015
D. 29.71
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The atomic mass of an element is fractional, because ______________________?
The atomic mass of an element is fractional, because ______________________?A. Of uncertainty principle
B. It may have isobars
C. It contains neutrons
D. It may have isotopesThe critical mass of a fissionable material can be reduced by__________________?
The critical mass of a fissionable material can be reduced by__________________?A. Heating it
B. Cooling it
C. Surrounding it by neutron reflecting material
D. Surrounding it by neutron absorbing materialLiquid metal (e.g., molten sodium) is preferred as a coolant in case of a/an ______________ reactor?
Liquid metal (e.g., molten sodium) is preferred as a coolant in case of a/an ______________ reactor?A. Homogeneous
B. Graphite moderated
C. Fast breeder
D. Enriched uranium (3% U-235) fuelledThe atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element ?
The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element ?A. A + Z
B. A – Z
C. A
D. ZH2 is a better coolant than CO2, due to it‟s relatively____________________?
H2 is a better coolant than CO2, due to it‟s relatively____________________?A. Lower density
B. Higher specific heat
C. Non-reactivity to uranium
D. Lower neutron capture cross-section“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 these