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MCQ practice · SSC Chemistry Board questions · Chapter 3: Structure of Matter

Cumilla Board 2023

Which of the following isotopes is used to treat leukaemia of the blood?

Think it through first, then pick an option.

  1. a 60Co
  2. b 32P
  3. c 99Tc
  4. d 131I
Answer and explanation

Correct answer: b 32P

The book: ³²P phosphate treats leukaemia of the blood.

Why the other options are wrong

  • a 60Co: ⁶⁰Co is for tumours; leukaemia is treated with ³²P.
  • c 99Tc: ⁹⁹Tc takes pictures for diagnosis; leukaemia is treated with ³²P.
  • d 131I: ¹³¹I is for thyroid cancer; leukaemia is treated with ³²P.

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