Stinging hair of nettle leaves inject fluid in the human body causing burning pain. The fluid is
- A. Methanoic acid ✓
- B. Tartaric acid
- C. Hydrochloric acid
- D. Sulphuric acid
Correct Answer: A. Methanoic acid
Explanation
Nettle leaf stings contain methanoic acid (also known as formic acid), which causes a burning sensation and pain upon entering the skin.
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