No new neutron
At least one new neutron
One new neutron
More than one new neutron
D. More than one new neutron
Maximum in centre and zero at side
Maximum at side and zero in canter
Uniform throughout
Zero throughout
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
Increased production of neutrons
Complete absorption of neutrons
Controlled production of neutrons
Decreased leakage of neutrons
Neutron
Proton
Atom
Electron
90% U₂₃₅
U₂₃₈
U₂₃₅
Pu₂₃₉
Steam power plant
Gas turbine power plant
Hydro electric power plant
Nuclear power plant
CO2
Pressurised water
Mixture of water and steam
Liquid metal
MeV
Curie
Farads
MW
The original elements change into completely different elements
The electrons of the element change
The molecules rearrange themselves to form other molecules
None of the above
Light weight atoms
Heavy weight atoms
Critical atoms
Zero weight atoms
Same
More
Less
May be less or mote depending on size
Electrons
α, β and γ rays
Neutron and gamma rays
None of these
Artificially
When U238 is irradiated by neutrons
By fission of Th232
As basic raw material
Greater than 1.0
Less than 1.0
Equal to zero
Equal to 1.0
Lead or concrete
Lead and tin
Graphite or cadmium
Thick galvanised sheets
Graphite, CO2
Graphite, air
Heavy water, CO2
Lead, H2
Uses graphite rods as moderator
Has powerful moderator
Has no moderator
Uses ferrite material as moderator
1-99 %
1-25 %
1-50 %
1-75 %
Regenerative reactor
Fast breeder reactor
Breeder reactor
Boiling water reactor
Percentage of U₂₃₅ has been artificially increased
Percentage of U has been artificially increased
Percentage of U₂₃₄ has been artificially increased
Extra energy is pumped from outside
100
200
300
400
Plutonium
Uranium
Deuterium
Thorium
5 MeV
10 MeV
199 MeV
168 MeV
Pressurised water
Boiling water
Gas cooled
Liquid metal cooled
U₂₃₃
U
U₂₃₈
Pu
Enriched uranium
Plutonium
Thorium
U
U₂₃₃ and Pu₂₂₉
U₂₃₁ and Pu₂₃₃
U₂₃₅ and Pu₂₃₅
U₂₃₈ and Pu₂₃₉
Any form of uranium
Natural uranium
Enriched uranium
Plutonium
Protons in the nucleus
Electrons in the nucleus
Neutrons in the nucleus
Electrons in the atom
Heavy water
Concrete and bricks
Graphite and concrete
Graphite