{"id":87762,"date":"2025-06-01T06:53:42","date_gmt":"2025-06-01T06:53:42","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=87762"},"modified":"2025-06-01T06:53:42","modified_gmt":"2025-06-01T06:53:42","slug":"which-one-of-the-following-materials-is-not-an-allotrope-of-carbon","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-materials-is-not-an-allotrope-of-carbon\/","title":{"rendered":"Which one of the following materials is not an allotrope of carbon ?"},"content":{"rendered":"

Which one of the following materials is not<\/b> an allotrope of carbon ?<\/p>\n

[amp_mcq option1=”Diamond” option2=”Graphene” option3=”Fly ash” option4=”Fullerene” correct=”option3″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-1 – 2021<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nFly ash is a residue produced from the combustion of pulverized coal in thermal power plants. It is primarily composed of fine particles of various oxides and minerals, such as silicon dioxide (SiO\u2082), aluminium oxide (Al\u2082O\u2083), iron oxide (Fe\u2082O\u2083), and calcium oxide (CaO), along with some unburnt carbon. It is not a pure form of carbon existing in a specific structural modification like diamond, graphene, or fullerene.
\n<\/section>\n
\nAllotropes are different forms of the same element in the same physical state. Carbon exists in many allotropic forms due to its ability to bond in various ways. Common allotropes include diamond (tetrahedral sp\u00b3 bonding), graphite (layered sp\u00b2 bonding), graphene (single layer of graphite), fullerenes (spherical or elliptical sp\u00b2 bonding, like C\u2086\u2080), carbon nanotubes, and lonsdaleite.
\n<\/section>\n
\nFly ash is often used as a pozzolanic material in concrete mixtures, improving its properties. While it contains some unburnt carbon, its composition is complex and includes many non-carbon components, classifying it as an industrial byproduct rather than an allotrope of carbon.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following materials is not an allotrope of carbon ? [amp_mcq option1=”Diamond” option2=”Graphene” option3=”Fly ash” option4=”Fullerene” correct=”option3″] This question was previously asked in UPSC NDA-1 – 2021 Download PDFAttempt Online Fly ash is a residue produced from the combustion of pulverized coal in thermal power plants. It is primarily composed of fine … <\/p>\n

Detailed SolutionWhich one of the following materials is not an allotrope of carbon ?<\/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":[1093],"tags":[1110,1368,1096],"class_list":["post-87762","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-1","tag-1110","tag-carbon-and-its-various-forms","tag-chemistry","no-featured-image-padding"],"yoast_head":"\nWhich one of the following materials is not an allotrope of carbon ?<\/title>\n<meta name=\"description\" content=\"Fly ash is a residue produced from the combustion of pulverized coal in thermal power plants. It is primarily composed of fine particles of various oxides and minerals, such as silicon dioxide (SiO\u2082), aluminium oxide (Al\u2082O\u2083), iron oxide (Fe\u2082O\u2083), and calcium oxide (CaO), along with some unburnt carbon. It is not a pure form of carbon existing in a specific structural modification like diamond, graphene, or fullerene. Allotropes are different forms of the same element in the same physical state. Carbon exists in many allotropic forms due to its ability to bond in various ways. Common allotropes include diamond (tetrahedral sp\u00b3 bonding), graphite (layered sp\u00b2 bonding), graphene (single layer of graphite), fullerenes (spherical or elliptical sp\u00b2 bonding, like C\u2086\u2080), carbon nanotubes, and lonsdaleite.\" \/>\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-materials-is-not-an-allotrope-of-carbon\/\" \/>\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 materials is not an allotrope of carbon ?\" \/>\n<meta property=\"og:description\" content=\"Fly ash is a residue produced from the combustion of pulverized coal in thermal power plants. It is primarily composed of fine particles of various oxides and minerals, such as silicon dioxide (SiO\u2082), aluminium oxide (Al\u2082O\u2083), iron oxide (Fe\u2082O\u2083), and calcium oxide (CaO), along with some unburnt carbon. It is not a pure form of carbon existing in a specific structural modification like diamond, graphene, or fullerene. Allotropes are different forms of the same element in the same physical state. Carbon exists in many allotropic forms due to its ability to bond in various ways. Common allotropes include diamond (tetrahedral sp\u00b3 bonding), graphite (layered sp\u00b2 bonding), graphene (single layer of graphite), fullerenes (spherical or elliptical sp\u00b2 bonding, like C\u2086\u2080), carbon nanotubes, and lonsdaleite.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-materials-is-not-an-allotrope-of-carbon\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T06:53:42+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 materials is not an allotrope of carbon ?","description":"Fly ash is a residue produced from the combustion of pulverized coal in thermal power plants. 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Common allotropes include diamond (tetrahedral sp\u00b3 bonding), graphite (layered sp\u00b2 bonding), graphene (single layer of graphite), fullerenes (spherical or elliptical sp\u00b2 bonding, like C\u2086\u2080), carbon nanotubes, and lonsdaleite.","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-materials-is-not-an-allotrope-of-carbon\/","og_locale":"en_US","og_type":"article","og_title":"Which one of the following materials is not an allotrope of carbon ?","og_description":"Fly ash is a residue produced from the combustion of pulverized coal in thermal power plants. 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