MCQ practice · SSC Chemistry Board questions · Chapter 3: Structure of Matter
Which isotope is used to cure brain cancer?
Think it through first, then pick an option.
- a ¹³¹I
- b ¹⁹²Ir
- c ⁶⁰Co
- d ³²P
Answer and explanation
Correct answer: b ¹⁹²Ir
The book: an iridium isotope cures brain cancer.
Why the other options are wrong
- a ¹³¹I: ¹³¹I is for thyroid cancer; brain cancer uses iridium.
- c ⁶⁰Co: ⁶⁰Co is for tumours; brain cancer uses iridium.
- d ³²P: ³²P is for leukaemia; brain cancer uses iridium.
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