- Barium sulphate (BaSO4) is a contrast agent used in radiology. - It is opaque to X-rays, allowing the structure of the digestive tract to be visualized. - It is used because it is insoluble in water and is not absorbed by the body, making it relatively safe for ingestion or rectal administration despite barium being toxic.
A patient's abdomen (alimentary canal) can be examined by X-ray after administering which one of the following metal salts in the patient's meal ?
Asked in UPSC CDS 2 2022 · Topic: Food Preservation, Nutrition, Medicine, etc. (Chemistry in Medical Diagnostics: Principles of Common Blood and Urine Tests)
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Answer: A. Barium sulphate
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