{"id":87016,"date":"2025-06-01T04:26:18","date_gmt":"2025-06-01T04:26:18","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=87016"},"modified":"2025-06-01T04:26:18","modified_gmt":"2025-06-01T04:26:18","slug":"lassaignes-test-is-used-for-the-detection-of-which-of-the-following","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/lassaignes-test-is-used-for-the-detection-of-which-of-the-following\/","title":{"rendered":"Lassaigne’s test is used for the detection of which of the following"},"content":{"rendered":"

Lassaigne’s test is used for the detection of which of the following elements?<\/p>\n

[amp_mcq option1=”N, S, P, Cl” option2=”C, N, P, Br” option3=”C, N, S, I” option4=”C, N, S, Br” correct=”option1″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC Geoscientist – 2023<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nLassaigne’s test is a qualitative test used in organic chemistry to detect the presence of elements like Nitrogen (N), Sulfur (S), Halogens (Chlorine, Bromine, Iodine – Cl, Br, I), and Phosphorus (P) in an organic compound. The test involves fusing the organic compound with metallic sodium, which converts these elements into ionic compounds (NaCN, Na\u2082S, NaX, Na\u2083P) that can be detected by specific tests in the aqueous extract (Lassaigne’s extract). Option A correctly lists Nitrogen, Sulfur, Phosphorus, and Chlorine, all of which are detectable by Lassaigne’s test.
\n<\/section>\n
\nLassaigne’s test detects elements *other than* carbon and hydrogen present in organic compounds.
\n<\/section>\n
\nAfter fusion with sodium, the compound is plunged into distilled water and boiled to create the Lassaigne’s extract. This extract is then tested for specific ions: CN\u207b (for N), S\u00b2\u207b (for S), X\u207b (for halogens), and PO\u2084\u00b3\u207b (for P). Carbon and hydrogen are the primary constituents of organic compounds and are not typically detected by this method.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Lassaigne’s test is used for the detection of which of the following elements? [amp_mcq option1=”N, S, P, Cl” option2=”C, N, P, Br” option3=”C, N, S, I” option4=”C, N, S, Br” correct=”option1″] This question was previously asked in UPSC Geoscientist – 2023 Download PDFAttempt Online Lassaigne’s test is a qualitative test used in organic chemistry to … <\/p>\n

Detailed SolutionLassaigne’s test is used for the detection of which of the following<\/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":[1091],"tags":[1105,1096,1272],"class_list":["post-87016","post","type-post","status-publish","format-standard","hentry","category-upsc-geoscientist","tag-1105","tag-chemistry","tag-organic-chemistry","no-featured-image-padding"],"yoast_head":"\nLassaigne's test is used for the detection of which of the following<\/title>\n<meta name=\"description\" content=\"Lassaigne's test is a qualitative test used in organic chemistry to detect the presence of elements like Nitrogen (N), Sulfur (S), Halogens (Chlorine, Bromine, Iodine - Cl, Br, I), and Phosphorus (P) in an organic compound. The test involves fusing the organic compound with metallic sodium, which converts these elements into ionic compounds (NaCN, Na\u2082S, NaX, Na\u2083P) that can be detected by specific tests in the aqueous extract (Lassaigne's extract). Option A correctly lists Nitrogen, Sulfur, Phosphorus, and Chlorine, all of which are detectable by Lassaigne's test. Lassaigne's test detects elements *other than* carbon and hydrogen present in organic compounds.\" \/>\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\/lassaignes-test-is-used-for-the-detection-of-which-of-the-following\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lassaigne's test is used for the detection of which of the following\" \/>\n<meta property=\"og:description\" content=\"Lassaigne's test is a qualitative test used in organic chemistry to detect the presence of elements like Nitrogen (N), Sulfur (S), Halogens (Chlorine, Bromine, Iodine - Cl, Br, I), and Phosphorus (P) in an organic compound. The test involves fusing the organic compound with metallic sodium, which converts these elements into ionic compounds (NaCN, Na\u2082S, NaX, Na\u2083P) that can be detected by specific tests in the aqueous extract (Lassaigne's extract). Option A correctly lists Nitrogen, Sulfur, Phosphorus, and Chlorine, all of which are detectable by Lassaigne's test. Lassaigne's test detects elements *other than* carbon and hydrogen present in organic compounds.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/lassaignes-test-is-used-for-the-detection-of-which-of-the-following\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T04:26:18+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Lassaigne's test is used for the detection of which of the following","description":"Lassaigne's test is a qualitative test used in organic chemistry to detect the presence of elements like Nitrogen (N), Sulfur (S), Halogens (Chlorine, Bromine, Iodine - Cl, Br, I), and Phosphorus (P) in an organic compound. The test involves fusing the organic compound with metallic sodium, which converts these elements into ionic compounds (NaCN, Na\u2082S, NaX, Na\u2083P) that can be detected by specific tests in the aqueous extract (Lassaigne's extract). Option A correctly lists Nitrogen, Sulfur, Phosphorus, and Chlorine, all of which are detectable by Lassaigne's test. Lassaigne's test detects elements *other than* carbon and hydrogen present in organic compounds.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/lassaignes-test-is-used-for-the-detection-of-which-of-the-following\/","og_locale":"en_US","og_type":"article","og_title":"Lassaigne's test is used for the detection of which of the following","og_description":"Lassaigne's test is a qualitative test used in organic chemistry to detect the presence of elements like Nitrogen (N), Sulfur (S), Halogens (Chlorine, Bromine, Iodine - Cl, Br, I), and Phosphorus (P) in an organic compound. The test involves fusing the organic compound with metallic sodium, which converts these elements into ionic compounds (NaCN, Na\u2082S, NaX, Na\u2083P) that can be detected by specific tests in the aqueous extract (Lassaigne's extract). Option A correctly lists Nitrogen, Sulfur, Phosphorus, and Chlorine, all of which are detectable by Lassaigne's test. Lassaigne's test detects elements *other than* carbon and hydrogen present in organic compounds.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/lassaignes-test-is-used-for-the-detection-of-which-of-the-following\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T04:26:18+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/lassaignes-test-is-used-for-the-detection-of-which-of-the-following\/","url":"https:\/\/exam.pscnotes.com\/mcq\/lassaignes-test-is-used-for-the-detection-of-which-of-the-following\/","name":"Lassaigne's test is used for the detection of which of the following","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T04:26:18+00:00","dateModified":"2025-06-01T04:26:18+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Lassaigne's test is a qualitative test used in organic chemistry to detect the presence of elements like Nitrogen (N), Sulfur (S), Halogens (Chlorine, Bromine, Iodine - Cl, Br, I), and Phosphorus (P) in an organic compound. 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