WBCS.LIVE practice question

Which specific isotope of uranium is primarily used as fuel in nuclear power reactors?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. U-238
  2. U-234
  3. U-235
  4. U-233

Correct answer and explanation

Correct answer: U-235

Explanation: āœ… Correct Answer: C) U-235 šŸ“š Explanation: Uranium-235 (U-235) is the only naturally occurring fissile isotope of uranium, meaning it can sustain a nuclear fission chain reaction. When its nucleus is struck by a neutron, it splits into smaller elements, releasing massive amounts of usable thermal energy. Therefore, it is the primary fuel heavily utilized in commercial nuclear reactors and nuclear weapons.