{"id":90471,"date":"2025-06-01T10:29:13","date_gmt":"2025-06-01T10:29:13","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=90471"},"modified":"2025-06-01T10:29:13","modified_gmt":"2025-06-01T10:29:13","slug":"which-one-of-the-following-is-not-a-heterocyclic-aromatic-compound","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-not-a-heterocyclic-aromatic-compound\/","title":{"rendered":"Which one of the following is NOT a heterocyclic aromatic compound ?"},"content":{"rendered":"

Which one of the following is NOT a heterocyclic aromatic compound ?<\/p>\n

[amp_mcq option1=”Tropolone” option2=”Furan” option3=”Thiophene” option4=”Pyridine” correct=”option1″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CAPF – 2020<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
Tropolone is a seven-membered carbocyclic compound containing a ketone and a hydroxyl group. Its aromaticity arises from the cyclic conjugated system within the carbon ring, but the ring itself is made entirely of carbon atoms. Furan, Thiophene, and Pyridine are all five- or six-membered rings containing heteroatoms (Oxygen in Furan, Sulfur in Thiophene, Nitrogen in Pyridine) within the ring structure, along with conjugated pi systems that satisfy H\u00fcckel’s rule, making them heterocyclic aromatic compounds.<\/section>\n
A heterocyclic compound contains at least one atom other than carbon (such as O, N, S) in its ring structure. An aromatic compound is cyclic, planar, conjugated, and obeys H\u00fcckel’s rule (4n+2 pi electrons).<\/section>\n
Tropolone is a carbocyclic aromatic compound. Common examples of heterocyclic aromatic compounds include pyridine, furan, thiophene, pyrrole, and imidazole.<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following is NOT a heterocyclic aromatic compound ? [amp_mcq option1=”Tropolone” option2=”Furan” option3=”Thiophene” option4=”Pyridine” correct=”option1″] This question was previously asked in UPSC CAPF – 2020 Download PDFAttempt Online Tropolone is a seven-membered carbocyclic compound containing a ketone and a hydroxyl group. Its aromaticity arises from the cyclic conjugated system within the carbon … <\/p>\n

Detailed SolutionWhich one of the following is NOT a heterocyclic aromatic compound ?<\/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":[1085],"tags":[1288,1096,1272],"class_list":["post-90471","post","type-post","status-publish","format-standard","hentry","category-upsc-capf","tag-1288","tag-chemistry","tag-organic-chemistry","no-featured-image-padding"],"yoast_head":"\nWhich one of the following is NOT a heterocyclic aromatic compound ?<\/title>\n<meta name=\"description\" content=\"Tropolone is a seven-membered carbocyclic compound containing a ketone and a hydroxyl group. Its aromaticity arises from the cyclic conjugated system within the carbon ring, but the ring itself is made entirely of carbon atoms. Furan, Thiophene, and Pyridine are all five- or six-membered rings containing heteroatoms (Oxygen in Furan, Sulfur in Thiophene, Nitrogen in Pyridine) within the ring structure, along with conjugated pi systems that satisfy H\u00fcckel's rule, making them heterocyclic aromatic compounds. A heterocyclic compound contains at least one atom other than carbon (such as O, N, S) in its ring structure. An aromatic compound is cyclic, planar, conjugated, and obeys H\u00fcckel's rule (4n+2 pi electrons).\" \/>\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\/which-one-of-the-following-is-not-a-heterocyclic-aromatic-compound\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following is NOT a heterocyclic aromatic compound ?\" \/>\n<meta property=\"og:description\" content=\"Tropolone is a seven-membered carbocyclic compound containing a ketone and a hydroxyl group. Its aromaticity arises from the cyclic conjugated system within the carbon ring, but the ring itself is made entirely of carbon atoms. Furan, Thiophene, and Pyridine are all five- or six-membered rings containing heteroatoms (Oxygen in Furan, Sulfur in Thiophene, Nitrogen in Pyridine) within the ring structure, along with conjugated pi systems that satisfy H\u00fcckel's rule, making them heterocyclic aromatic compounds. A heterocyclic compound contains at least one atom other than carbon (such as O, N, S) in its ring structure. An aromatic compound is cyclic, planar, conjugated, and obeys H\u00fcckel's rule (4n+2 pi electrons).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-not-a-heterocyclic-aromatic-compound\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:29:13+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":"Which one of the following is NOT a heterocyclic aromatic compound ?","description":"Tropolone is a seven-membered carbocyclic compound containing a ketone and a hydroxyl group. Its aromaticity arises from the cyclic conjugated system within the carbon ring, but the ring itself is made entirely of carbon atoms. Furan, Thiophene, and Pyridine are all five- or six-membered rings containing heteroatoms (Oxygen in Furan, Sulfur in Thiophene, Nitrogen in Pyridine) within the ring structure, along with conjugated pi systems that satisfy H\u00fcckel's rule, making them heterocyclic aromatic compounds. A heterocyclic compound contains at least one atom other than carbon (such as O, N, S) in its ring structure. An aromatic compound is cyclic, planar, conjugated, and obeys H\u00fcckel's rule (4n+2 pi electrons).","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\/which-one-of-the-following-is-not-a-heterocyclic-aromatic-compound\/","og_locale":"en_US","og_type":"article","og_title":"Which one of the following is NOT a heterocyclic aromatic compound ?","og_description":"Tropolone is a seven-membered carbocyclic compound containing a ketone and a hydroxyl group. Its aromaticity arises from the cyclic conjugated system within the carbon ring, but the ring itself is made entirely of carbon atoms. Furan, Thiophene, and Pyridine are all five- or six-membered rings containing heteroatoms (Oxygen in Furan, Sulfur in Thiophene, Nitrogen in Pyridine) within the ring structure, along with conjugated pi systems that satisfy H\u00fcckel's rule, making them heterocyclic aromatic compounds. A heterocyclic compound contains at least one atom other than carbon (such as O, N, S) in its ring structure. An aromatic compound is cyclic, planar, conjugated, and obeys H\u00fcckel's rule (4n+2 pi electrons).","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-not-a-heterocyclic-aromatic-compound\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T10:29:13+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\/which-one-of-the-following-is-not-a-heterocyclic-aromatic-compound\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-not-a-heterocyclic-aromatic-compound\/","name":"Which one of the following is NOT a heterocyclic aromatic compound ?","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T10:29:13+00:00","dateModified":"2025-06-01T10:29:13+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Tropolone is a seven-membered carbocyclic compound containing a ketone and a hydroxyl group. Its aromaticity arises from the cyclic conjugated system within the carbon ring, but the ring itself is made entirely of carbon atoms. Furan, Thiophene, and Pyridine are all five- or six-membered rings containing heteroatoms (Oxygen in Furan, Sulfur in Thiophene, Nitrogen in Pyridine) within the ring structure, along with conjugated pi systems that satisfy H\u00fcckel's rule, making them heterocyclic aromatic compounds. A heterocyclic compound contains at least one atom other than carbon (such as O, N, S) in its ring structure. An aromatic compound is cyclic, planar, conjugated, and obeys H\u00fcckel's rule (4n+2 pi electrons).","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-not-a-heterocyclic-aromatic-compound\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-not-a-heterocyclic-aromatic-compound\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-not-a-heterocyclic-aromatic-compound\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC CAPF","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-capf\/"},{"@type":"ListItem","position":3,"name":"Which one of the following is NOT a heterocyclic aromatic compound ?"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/90471","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=90471"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/90471\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=90471"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=90471"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=90471"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}