UPSC CAPF AC 2024 Paper 1 · Question 12

Question 12 of the UPSC CAPF (AC) 2024 Paper I (4 August 2024). Try it first, then open the answer and explanation.

1. CAPF 2024 · P-I · Q12 · General Science · Chemistry

   The isotope of which one among the following elements is used in the treatment of cancer?

   1. Uranium
   2. Cobalt
   3. Iodine
   4. Fluorine

   निम्नलिखित में से किस तत्व के समस्थानिक (आइसोटोप) का प्रयोग कैंसर के उपचार में किया जाता है?

   1. यूरेनियम
   2. कोबाल्ट
   3. आयोडीन
   4. फ्लुओरीन
   Show answer

   Answer: (2) Cobalt

   उत्तर: (2) कोबाल्ट

   Cobalt-60 emits high-energy gamma rays and is the classic radioisotope used in radiotherapy ("cobalt therapy") to destroy cancer cells. Iodine-131 is used mainly for thyroid disorders (including thyroid cancer), fluorine-18 is used in PET scans for diagnosis, and uranium isotopes are nuclear fuels, so the standard answer is cobalt.

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