{"id":86288,"date":"2025-06-01T03:42:41","date_gmt":"2025-06-01T03:42:41","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=86288"},"modified":"2025-06-01T03:42:41","modified_gmt":"2025-06-01T03:42:41","slug":"stinging-hair-of-nettle-leaves-inject-fluid-in-the-human-body-causing","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/stinging-hair-of-nettle-leaves-inject-fluid-in-the-human-body-causing\/","title":{"rendered":"Stinging hair of nettle leaves inject fluid in the human body causing"},"content":{"rendered":"

Stinging hair of nettle leaves inject fluid in the human body causing burning pain. The fluid is<\/p>\n

[amp_mcq option1=”Methanoic acid” option2=”Tartaric acid” option3=”Hydrochloric acid” option4=”Sulphuric acid” correct=”option1″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CDS-2 – 2022<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe stinging sensation and burning pain caused by contact with nettle leaves (like *Urtica dioica*) are due to fine, brittle hairs (trichomes) on the plant surface that break off and inject chemicals into the skin. The fluid injected contains several irritants, including histamine, acetylcholine, serotonin, and notably, formic acid, which is also known as methanoic acid. Methanoic acid is a simple carboxylic acid that contributes significantly to the burning and stinging sensation.
\n<\/section>\n
\nNettle stings inject chemicals including methanoic acid (formic acid).
\n<\/section>\n
\nOther acids like tartaric acid are found in fruits like grapes and tamarind. Hydrochloric acid and Sulphuric acid are strong mineral acids not typically found in biological tissues in this manner.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Stinging hair of nettle leaves inject fluid in the human body causing burning pain. The fluid is [amp_mcq option1=”Methanoic acid” option2=”Tartaric acid” option3=”Hydrochloric acid” option4=”Sulphuric acid” correct=”option1″] This question was previously asked in UPSC CDS-2 – 2022 Download PDFAttempt Online The stinging sensation and burning pain caused by contact with nettle leaves (like *Urtica dioica*) … <\/p>\n

Detailed SolutionStinging hair of nettle leaves inject fluid in the human body causing<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1088],"tags":[1108,1096,1329],"class_list":["post-86288","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-2","tag-1108","tag-chemistry","tag-organic-acid","no-featured-image-padding"],"yoast_head":"\nStinging hair of nettle leaves inject fluid in the human body causing<\/title>\n<meta name=\"description\" content=\"The stinging sensation and burning pain caused by contact with nettle leaves (like *Urtica dioica*) are due to fine, brittle hairs (trichomes) on the plant surface that break off and inject chemicals into the skin. The fluid injected contains several irritants, including histamine, acetylcholine, serotonin, and notably, formic acid, which is also known as methanoic acid. Methanoic acid is a simple carboxylic acid that contributes significantly to the burning and stinging sensation. Nettle stings inject chemicals including methanoic acid (formic acid).\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/stinging-hair-of-nettle-leaves-inject-fluid-in-the-human-body-causing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Stinging hair of nettle leaves inject fluid in the human body causing\" \/>\n<meta property=\"og:description\" content=\"The stinging sensation and burning pain caused by contact with nettle leaves (like *Urtica dioica*) are due to fine, brittle hairs (trichomes) on the plant surface that break off and inject chemicals into the skin. The fluid injected contains several irritants, including histamine, acetylcholine, serotonin, and notably, formic acid, which is also known as methanoic acid. Methanoic acid is a simple carboxylic acid that contributes significantly to the burning and stinging sensation. 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