Multiple choice general knowledge science & technology

Barium is used for

  1. Checking blood group

  2. X-ray of brain

  3. X-ray of alimentary canal

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Barium is a contrast agent used in X-rays of the alimentary canal (digestive tract) to visualize the esophagus, stomach, and intestines. The patient drinks barium sulfate, which coats the digestive lining and appears white on X-rays. It is not used for blood grouping or brain X-rays.

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