Question

Q. Considering the following pairs:

Radioactive Elements	Medical Applications
1. Iodine-131	cancer cure
2. Strontium-89	Bone pain
3. Cobalt-60	Radiotherapy
4. Gamma rays	Sterilization

Which of the pairs given above are correctly matched?

• A. 1 and 2 only
• B. 2, 3 and 4 only
• C. 1, 3 and 4 only
• D. 1, 2, 3 and 4

Answer 1

The correct option is D 1, 2, 3 and 4

Explanation:

All of the pairs are correctly matched.

Radiotherapy can be used to treat some medical conditions, especially cancer, using radiation to weaken or destroy particular targeted cells.

• Iodine-131 to cure thyroid cancer.
• Permanent implant seeds of iodine-125 or palladium-103 are used in brachytherapy for early-stage prostate cancer.
• strontium-89 and (increasingly) samarium-153 are used for the relief of cancer-induced bone pain.
• Sterilizing Medical Equipment: radiation in high enough quantities can kill microorganisms types of radiation (mainly gamma radiation) to sterilize dressings, surgical gloves, bandages, plastic and rubber sheets, syringes etc.
• Cobalt-60: Formerly used for external beam radiotherapy, now almost universally used for sterilising. High-specific-activity (HSA) Co-60 is used for brain cancer treatment.