Power Plant Engineering
In nuclear fission

None of the listed here
The original elements change into completely different elements
The molecules rearrange themselves to form other molecules
The electrons of the element change

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Power Plant Engineering
In natural uranium, the constituents of three naturally occurring isotopes are

U₂₃₄ = 0.006%, U₂₃₅ = 99.282% and U₂₃₈ = 0.712%
U₂₃₄ = 0.712%, U₂₃₅ = 0.006% and U₂₃₈ = 99.282%
U₂₃₄ = 0.006%, U₂₃₅ = 0.712% and U₂₃₈ = 99.282%
U₂₃₄ = 99.282%, U₂₃₅ = 0.006% and U₂₃₈ = 0.712%

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Power Plant Engineering
Ferrite material is

Basic raw material for nuclear plants
The most fissionable material
The material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material
The basic fuel for nuclear paints

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