Any form of uranium
Natural uranium
Enriched uranium
Plutonium
Natural uranium
Enriched uranium
Pure uranium
Any type of uranium
Heavy water
Graphite
Carbon dioxide
No moderator is needed
Same
Lower
Higher
Unity
Infinite
Zero
Exactly balanced by the loss of neutrons through leakage
Initiated
Chain reaction can be initiated
It becomes uncontrollable
It explodes
It produces no power
For boiling pi water in the core
To use liquid sodium metal as coolant
To use intermediate coolant
To prevent the water coolant from boiling in the core
Artificially
When U238 is irradiated by neutrons
By fission of Th232
As basic raw material
Boiling water
Gas cooled
Pressurised water
All of the above
More
Less
Same
Zero
Unity
More than unity
Less than unity
Zero
Steam power plant
Gas turbine power plant
Hydro electric power plant
Nuclear power plant
As basic raw material
By neutron irradiation of Uz
By neutron irradiation of thorium
Artificially
As basic raw material
By neutron irradiation of Uz
By neutron irradiation of thorium
Artificially
Demineralised water
Carbon dioxide
Heavy water
No moderator is used
Plutonium
Uranium
Deuterium
Thorium
In a heterogeneous or solid fuel reactor, the fuel is mixed in a regular pattern within moderator.
Slow or thermal neutrons have energy of the order or 0.025 eV
Fast neutrons have energies above 1000 eV
Fast reactor uses moderator
U₂₃₄ = 0.006%, U₂₃₅ = 0.712% and U₂₃₈ = 99.282%
U₂₃₄ = 0.712%, U₂₃₅ = 0.006% and U₂₃₈ = 99.282%
U₂₃₄ = 99.282%, U₂₃₅ = 0.006% and U₂₃₈ = 0.712%
U₂₃₄ = 0.006%, U₂₃₅ = 99.282% and U₂₃₈ = 0.712%
Boiler
Direct cycle of coolant system
Double circuit system of coolant cycle
Multi passes system
Acts as good moderator
Produces maximum steam
Transfers heat from core at a fast rate
Breeds neutrons
Pressurised water
Boiling water
Gas cooled
Liquid metal cooled
Increases
Decreases
Have no effect on
None of these
It is generating power to rated capacity
It is capable of generating much more than rated capacity
There is danger of nuclear spread
Chain reaction that causes automatic splitting of the fuel nuclei has been established
Same atomic number and different masses
Same chemical properties but different atomic numbers
Different masses and different atomic numbers
Different chemical properties and same atomic numbers
Power generation
Nucleonic devices
Nuclear fission
Medical field
Slow down the speed of fast moving neutrons
Control the reaction
Reduce the temperature
Extracts heat from nuclear reaction
Carbon
Lead
Concrete
All of these
Artificially
As basic raw material
When thorium is irradiated by neutrons
By fission of U₂₃₈
U₂₃₅
U₂₃₈
Pu₂₃₃
Pu₂₃₉
20
200
2000
20,000