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      Question

      Which of the following is generally not used in the generation of energy?

      A Physical change Correct Answer Incorrect Answer
      B Chemical reaction Correct Answer Incorrect Answer
      C Fusion reaction Correct Answer Incorrect Answer
      D Fission reaction Correct Answer Incorrect Answer

      Solution

      Generally physical change does not produce energy but a chemical reaction produces energy. Nuclear fission and fusion reactions generate a huge amount of energy.

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