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During fission of one Uranium-235 atom, the unstable nucleus splits into barium and krypton while releasing approximately how much energy?
A3 MeV
B200 MeV
C236 MeV
D92 MeV
Answer & Solution
Correct answer: B. 200 MeV
1. Uranium-236 splits into atoms of barium and krypton.
2. This fission releases three neutrons and about 200 MeV of energy.
3. The number 3 (option A) is the count of neutrons released, not the energy, so it is a trap.
4. The number 236 (option C) is the mass of the unstable isotope, not the energy, ruling it out.
5. The number 92 (option D) is the atomic number of uranium, not the energy, so it is wrong.
6. So the energy released per fission is 200 MeV.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 5 "Towards Green Energy", p.59_
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