10th Class Science Sample Paper Science Olympiad Model Test Paper-21

  • question_answer
    How long a chain reaction will take for fission of all nuclei present in 1 kg of U-235?

    A) One hour

    B) One day

    C) Between 3 and 5 minutes

    D)  Less than 1 minute

    E)  None of these

    Correct Answer: D


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