Same
More
Less
May be less or mote depending on size
C. Less
Maximum in centre and zero at side
Maximum at side and zero in canter
Uniform throughout
Zero throughout
Absorbs neutrons
Does not absorb neutrons
Accelerates neutrons
None of these
Regenerative reactor
Fast breeder reactor
Breeder reactor
Boiling water reactor
Neutron
Proton
Atom
Electron
1 MeV
2.4 MeV
4.3 MeV
7.8 MeV
Does not absorb neutrons
Absorbs neutrons
Accelerates neutrons
Eats up neutrons
U₂₃₃
U
U₂₃₈
Pu
90% U₂₃₅
U₂₃₈
U₂₃₅
Pu₂₃₉
High energy (fast) neutrons alone
Low energy (slow) neutrons alone
Either fast or slow neutrons
Medium energy neutrons
U₂₃₄
U₂₃₅
U₂₃₈
All of these
1-99 %
1-25 %
1-50 %
1-75 %
Same
More
Less
There is no such criterion
20
200
2000
20,000
Mass number
Atomic number
Chemical properties
Position in periodic table
Splitting
Fission
Fusion
Disintegration
U₂₃₃ and Pu₂₂₉
U₂₃₁ and Pu₂₃₃
U₂₃₅ and Pu₂₃₅
U₂₃₈ and Pu₂₃₉
More
Less
Same
Zero
To produce heat for thermoelectric power
To produce fissionable material
To propel ships, submarines, aircrafts
All of these
Graphite, CO2
Graphite, air
Heavy water, CO2
Lead, H2
Fast moving
Slow moving
Critical neutrons
Neutrons at rest
Carbon
Lead
Concrete
All of these
Plutonium
Uranium
Deuterium
Thorium
Used fuel should be reprocessed
Moderator should be used
Coolant should be employed
Control rods should be used
Gas cooled
Liquid metal cooled
Pressurised water
Boiling water
No new neutron
At least one new neutron
One new neutron
More than one new neutron
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
Electrons
α, β and γ rays
Neutron and gamma rays
None of these
Nucleus
Electron
Proton
Meson
Artificially
When U238 is irradiated by neutrons
By fission of Th232
As basic raw material
100
200
300
400