Multiple choice general knowledge science & technology

Barium is used for

  1. Checking blood group

  2. X-ray of alimentary canal

  3. X-ray of brain

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

Barium sulfate is a radiopaque contrast medium used as a barium meal or enema to visualize the alimentary canal (digestive tract) on X-rays. The coating highlights the esophagus, stomach, and intestines, revealing structural abnormalities. It is not used for blood grouping or brain imaging.

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