{"id":91770,"date":"2025-06-01T11:05:20","date_gmt":"2025-06-01T11:05:20","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=91770"},"modified":"2025-06-01T11:05:20","modified_gmt":"2025-06-01T11:05:20","slug":"with-reference-to-carbon-nanotubes-consider-the-following-statements","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-carbon-nanotubes-consider-the-following-statements\/","title":{"rendered":"With reference to carbon nanotubes, consider the following statements:"},"content":{"rendered":"<p>With reference to carbon nanotubes, consider the following statements:<\/p>\n<ul>\n<li>They can be used as carriers of drugs and antigens in the human body.<\/li>\n<li>They can be made into artificial blood capillaries for an injured part of human body.<\/li>\n<li>They can be used in biochemical sensors.<\/li>\n<li>Carbon nanotubes are biodegradable.<\/li>\n<\/ul>\n<p>Which of the statements given above are correct ?<\/p>\n<p>[amp_mcq option1=&#8221;1 and 2 only&#8221; option2=&#8221;2, 3 and 4 only&#8221; option3=&#8221;1, 3 and 4 only&#8221; option4=&#8221;1, 2, 3 and 4&#8243; correct=&#8221;option4&#8243;]<\/p>\n<div class=\"psc-box-pyq-exam-year-detail\">\n<div class=\"pyq-exam\">\n<div class=\"psc-heading\">This question was previously asked in<\/div>\n<div class=\"psc-title line-ellipsis\">UPSC IAS &#8211; 2020<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-ias-2020.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-ias-2020\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nAccording to the official answer key for UPSC Prelims 2020, all four statements are considered correct.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\nStatement 1: Carbon nanotubes (CNTs) have a high surface area and can be functionalized to attach drugs, proteins, and antigens. They are widely researched as potential drug delivery systems and carriers for vaccines in the human body. Correct.<br \/>\nStatement 2: CNTs possess high strength and unique electrical properties, making them candidates for use in biomaterials. Research is ongoing to explore their potential in tissue engineering, including creating scaffolds or artificial structures that could mimic biological tissues like blood capillaries. Correct.<br \/>\nStatement 3: CNTs exhibit changes in electrical conductivity upon binding with specific molecules. This property makes them excellent candidates for use in highly sensitive biochemical sensors for detecting various substances, including biomarkers, pathogens, and environmental pollutants. Correct.<br \/>\nStatement 4: While pristine carbon nanotubes are generally considered poorly biodegradable and their persistence in the body or environment is a concern, significant research efforts are focused on modifying or functionalizing CNTs to make them biodegradable for biomedical and environmental applications. Some types of functionalized CNTs have shown evidence of enzymatic or cellular degradation. Therefore, depending on the specific type and context, biodegradability can be considered a relevant property or a goal being actively pursued and achieved in specific cases, leading to this statement being considered correct in a broad sense.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nCarbon nanotubes are allotropes of carbon with cylindrical nanostructure. They have exceptional mechanical, electrical, thermal, and optical properties, leading to diverse applications in electronics, materials science, energy, and biomedicine. Their potential interaction with biological systems and environmental fate are active areas of research.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>With reference to carbon nanotubes, consider the following statements: They can be used as carriers of drugs and antigens in the human body. They can be made into artificial blood capillaries for an injured part of human body. They can be used in biochemical sensors. Carbon nanotubes are biodegradable. Which of the statements given above &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"With reference to carbon nanotubes, consider the following statements:\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-carbon-nanotubes-consider-the-following-statements\/#more-91770\">Detailed Solution<span class=\"screen-reader-text\">With reference to carbon nanotubes, consider the following statements:<\/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":[1092],"tags":[1288,1117,1115],"class_list":["post-91770","post","type-post","status-publish","format-standard","hentry","category-upsc-ias","tag-1288","tag-biology","tag-miscellaneous","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>With reference to carbon nanotubes, consider the following statements:<\/title>\n<meta name=\"description\" content=\"According to the official answer key for UPSC Prelims 2020, all four statements are considered correct. Statement 1: Carbon nanotubes (CNTs) have a high surface area and can be functionalized to attach drugs, proteins, and antigens. They are widely researched as potential drug delivery systems and carriers for vaccines in the human body. Correct. Statement 2: CNTs possess high strength and unique electrical properties, making them candidates for use in biomaterials. Research is ongoing to explore their potential in tissue engineering, including creating scaffolds or artificial structures that could mimic biological tissues like blood capillaries. Correct. Statement 3: CNTs exhibit changes in electrical conductivity upon binding with specific molecules. This property makes them excellent candidates for use in highly sensitive biochemical sensors for detecting various substances, including biomarkers, pathogens, and environmental pollutants. Correct. Statement 4: While pristine carbon nanotubes are generally considered poorly biodegradable and their persistence in the body or environment is a concern, significant research efforts are focused on modifying or functionalizing CNTs to make them biodegradable for biomedical and environmental applications. Some types of functionalized CNTs have shown evidence of enzymatic or cellular degradation. Therefore, depending on the specific type and context, biodegradability can be considered a relevant property or a goal being actively pursued and achieved in specific cases, leading to this statement being considered correct in a broad sense.\" \/>\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\/with-reference-to-carbon-nanotubes-consider-the-following-statements\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"With reference to carbon nanotubes, consider the following statements:\" \/>\n<meta property=\"og:description\" content=\"According to the official answer key for UPSC Prelims 2020, all four statements are considered correct. Statement 1: Carbon nanotubes (CNTs) have a high surface area and can be functionalized to attach drugs, proteins, and antigens. They are widely researched as potential drug delivery systems and carriers for vaccines in the human body. Correct. Statement 2: CNTs possess high strength and unique electrical properties, making them candidates for use in biomaterials. Research is ongoing to explore their potential in tissue engineering, including creating scaffolds or artificial structures that could mimic biological tissues like blood capillaries. Correct. Statement 3: CNTs exhibit changes in electrical conductivity upon binding with specific molecules. This property makes them excellent candidates for use in highly sensitive biochemical sensors for detecting various substances, including biomarkers, pathogens, and environmental pollutants. Correct. Statement 4: While pristine carbon nanotubes are generally considered poorly biodegradable and their persistence in the body or environment is a concern, significant research efforts are focused on modifying or functionalizing CNTs to make them biodegradable for biomedical and environmental applications. Some types of functionalized CNTs have shown evidence of enzymatic or cellular degradation. Therefore, depending on the specific type and context, biodegradability can be considered a relevant property or a goal being actively pursued and achieved in specific cases, leading to this statement being considered correct in a broad sense.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-carbon-nanotubes-consider-the-following-statements\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T11:05:20+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=\"2 minutes\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"With reference to carbon nanotubes, consider the following statements:","description":"According to the official answer key for UPSC Prelims 2020, all four statements are considered correct. Statement 1: Carbon nanotubes (CNTs) have a high surface area and can be functionalized to attach drugs, proteins, and antigens. They are widely researched as potential drug delivery systems and carriers for vaccines in the human body. Correct. Statement 2: CNTs possess high strength and unique electrical properties, making them candidates for use in biomaterials. Research is ongoing to explore their potential in tissue engineering, including creating scaffolds or artificial structures that could mimic biological tissues like blood capillaries. Correct. Statement 3: CNTs exhibit changes in electrical conductivity upon binding with specific molecules. This property makes them excellent candidates for use in highly sensitive biochemical sensors for detecting various substances, including biomarkers, pathogens, and environmental pollutants. Correct. Statement 4: While pristine carbon nanotubes are generally considered poorly biodegradable and their persistence in the body or environment is a concern, significant research efforts are focused on modifying or functionalizing CNTs to make them biodegradable for biomedical and environmental applications. Some types of functionalized CNTs have shown evidence of enzymatic or cellular degradation. Therefore, depending on the specific type and context, biodegradability can be considered a relevant property or a goal being actively pursued and achieved in specific cases, leading to this statement being considered correct in a broad sense.","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\/with-reference-to-carbon-nanotubes-consider-the-following-statements\/","og_locale":"en_US","og_type":"article","og_title":"With reference to carbon nanotubes, consider the following statements:","og_description":"According to the official answer key for UPSC Prelims 2020, all four statements are considered correct. Statement 1: Carbon nanotubes (CNTs) have a high surface area and can be functionalized to attach drugs, proteins, and antigens. They are widely researched as potential drug delivery systems and carriers for vaccines in the human body. Correct. Statement 2: CNTs possess high strength and unique electrical properties, making them candidates for use in biomaterials. Research is ongoing to explore their potential in tissue engineering, including creating scaffolds or artificial structures that could mimic biological tissues like blood capillaries. Correct. Statement 3: CNTs exhibit changes in electrical conductivity upon binding with specific molecules. This property makes them excellent candidates for use in highly sensitive biochemical sensors for detecting various substances, including biomarkers, pathogens, and environmental pollutants. Correct. Statement 4: While pristine carbon nanotubes are generally considered poorly biodegradable and their persistence in the body or environment is a concern, significant research efforts are focused on modifying or functionalizing CNTs to make them biodegradable for biomedical and environmental applications. Some types of functionalized CNTs have shown evidence of enzymatic or cellular degradation. Therefore, depending on the specific type and context, biodegradability can be considered a relevant property or a goal being actively pursued and achieved in specific cases, leading to this statement being considered correct in a broad sense.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-carbon-nanotubes-consider-the-following-statements\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T11:05:20+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-carbon-nanotubes-consider-the-following-statements\/","url":"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-carbon-nanotubes-consider-the-following-statements\/","name":"With reference to carbon nanotubes, consider the following statements:","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T11:05:20+00:00","dateModified":"2025-06-01T11:05:20+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"According to the official answer key for UPSC Prelims 2020, all four statements are considered correct. Statement 1: Carbon nanotubes (CNTs) have a high surface area and can be functionalized to attach drugs, proteins, and antigens. They are widely researched as potential drug delivery systems and carriers for vaccines in the human body. Correct. Statement 2: CNTs possess high strength and unique electrical properties, making them candidates for use in biomaterials. Research is ongoing to explore their potential in tissue engineering, including creating scaffolds or artificial structures that could mimic biological tissues like blood capillaries. Correct. Statement 3: CNTs exhibit changes in electrical conductivity upon binding with specific molecules. This property makes them excellent candidates for use in highly sensitive biochemical sensors for detecting various substances, including biomarkers, pathogens, and environmental pollutants. Correct. Statement 4: While pristine carbon nanotubes are generally considered poorly biodegradable and their persistence in the body or environment is a concern, significant research efforts are focused on modifying or functionalizing CNTs to make them biodegradable for biomedical and environmental applications. Some types of functionalized CNTs have shown evidence of enzymatic or cellular degradation. 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