Is lighter
Is inert
Has high specific heat
Is a good conductor
C. Has high specific heat
Higher cost of nuclear fuel
High initial cost
High heat rejection in condenser
Lower temperature and pressure conditions
Return the neutrons back into the core
Shield the radioactivity completely
Check pollution
Conserve energy
Increased production of neutrons
Complete absorption of neutrons
Controlled production of neutrons
Decreased leakage of neutrons
Operate at extremely high power densities.
Are liquid metal cooled
Produce more fuel than they consume
Use water as coolant
Any form of uranium
Natural uranium
Enriched uranium
Plutonium
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%
99.282% U₂₃₈, 0.712% U₂₃₅, 0.006% U₂₃₄
99.282% U₂₃₅, 0.712% U₂₃₈, 0.06%' U₂₃₄
99.282% U₂₃₄, 0.712% U₂₃₈, 0.006% U₂₃₅
99.282% U₂₃₅, 0.712% U₂₃₄, 0.006% U₂₃₈
Enriched uranium
Plutonium
Thorium
U₂₃₅
Kinetic energy of neutrons
Kinetic energy of fission products
Instantaneous release of gamma rays
Gradual radioactive decay of fission products
Infinite
Zero
Exactly balanced by the loss of neutrons through leakage
Initiated
Pressurised water
Boiling water
Gas cooled
Liquid metal cooled
U₂₃₃ and Pu₂₃₉
U₂₃₅ and Th₂₃₂
U₂₃₅ and Pu₂₃₈
U₂₃₃ and Pu₂₃₈
U₂₃₅
U₂₃₈
Pu₂₃₉
Pu₂₃₃
100
200
300
400
1 tonne of high grade coal
4.5 tonnes of high grade coal
10 tonnes of high grade coal
100 tonnes of high grade coal
Atomic power
Energy
Voltage
Radio activity
Electrons
Protons
Neutrons
Atom
Absorbs neutrons
Does not absorb neutrons
Accelerates neutrons
None of these
Fast
Slow
In bulk
Static
Light or heavy water
Molten lead
Carbon dioxide
Freon
Enriched uranium
Plutonium
Thorium
U
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
High neutron absorption cross-section
Low moderating efficiency
High neutron scatter cross-section
Low neutron absorption cross-section
High energy (fast) neutrons alone
Low energy (slow) neutrons alone
Either fast or slow neutrons
Medium energy neutrons
Splitting
Fission
Fusion
Disintegration
Natural uranium
Enriched uranium
Pure uranium
Any type of uranium
Artificially
As basic raw material
When thorium is irradiated by neutrons
By fission of U₂₃₈
Boiling water
Gas cooled
Pressurised water
All of the above
Is lighter
Is inert
Has high specific heat
Is a good conductor
Heavy water
Graphite
Carbon dioxide
No moderator is needed