Which of the following undergoes fission reaction easily ?
Correct answer: D. U-235
- A. None of these
- B. U-238
- C. Th-232
- D. U-235
Explanation
U-235 is fissile, meaning it undergoes fission readily after absorbing even slow thermal neutrons. U-238 and Th-232 are mainly fertile and require more energetic neutrons for fission.
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