2. Sample Papers
  3. 9th Class
  4. Science

9th Class Science Sample Paper Science Sample Paper-2

  • question_answer
    Which of the following radioactive isotopes is used to treat cancer?

    A) arsenic-74         

    B) Cobalt-60

    C) iodine-131         

    D)        uranium-235

    E) None of these

    Correct Answer: B

You need to login to perform this action.
You will be redirected in 3 sec spinner