MCQ practice · SSC Chemistry Board questions · Chapter 3: Structure of Matter
Which isotope is used to detect the presence of a tumour in the human body?
Think it through first, then pick an option.
- a ¹³¹I
- b ⁹⁹Tc
- c ⁶⁰Co
- d ³²P
Answer and explanation
Correct answer: c ⁶⁰Co
The book: ⁶⁰Co detects and treats tumours.
Why the other options are wrong
- a ¹³¹I: ¹³¹I treats thyroid cancer; tumours are detected with ⁶⁰Co.
- b ⁹⁹Tc: ⁹⁹Tc images diseased sites, but the book names ⁶⁰Co for tumours.
- d ³²P: ³²P is used for leukaemia; tumours are detected with ⁶⁰Co.
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