Multiple choice general knowledge

Which is the element present in onion that is responsible for tears?

  1. Phosphorus

  2. Nitrogen

  3. Sulphur

  4. Potassium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is a duplicate of question 68247. Onions contain sulfur compounds, specifically syn-propanethial-S-oxide, which is released when you cut into the onion. This volatile sulfur compound irritates the tear glands in your eyes, causing them to produce tears as a protective mechanism. The sulfur content is also what gives onions their characteristic pungent flavor and smell.

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