{"id":91748,"date":"2025-06-01T11:04:55","date_gmt":"2025-06-01T11:04:55","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=91748"},"modified":"2025-06-01T11:04:55","modified_gmt":"2025-06-01T11:04:55","slug":"consider-the-following-statements-1-coal-ash-contains-arsenic-lea","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-statements-1-coal-ash-contains-arsenic-lea\/","title":{"rendered":"Consider the following statements:\n  1. Coal ash contains arsenic, lea"},"content":{"rendered":"<p>Consider the following statements:<\/p>\n<ul>\n<li>1. Coal ash contains arsenic, lead and mercury.<\/li>\n<li>2. Coal-fired power plants release sulphur dioxide and oxides of nitrogen into the environment.<\/li>\n<li>3. High ash content is observed in Indian coal.<\/li>\n<\/ul>\n<p>Which of the statements given above is\/are correct?<\/p>\n<p>[amp_mcq option1=&#8221;1 only&#8221; option2=&#8221;2 and 3 only&#8221; option3=&#8221;3 only&#8221; option4=&#8221;1, 2 and 3&#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\">\nStatement 1 is correct: Coal ash (fly ash and bottom ash), a residue from burning coal, contains various heavy metals and toxic substances, including arsenic, lead, mercury, chromium, cadmium, and selenium.<br \/>\nStatement 2 is correct: Coal-fired power plants are major sources of air pollution. The combustion process releases sulphur dioxide (SO2) and oxides of nitrogen (NOx) into the atmosphere, which are precursors to acid rain and contribute to respiratory problems.<br \/>\nStatement 3 is correct: Indian coal is known for having a relatively high ash content compared to coal found in many other parts of the world. This high ash content poses challenges for power plants in terms of handling and disposal of large volumes of ash and also affects the efficiency of combustion.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\nCoal combustion produces significant environmental pollutants, including toxic ash containing heavy metals and gaseous emissions like SO2 and NOx. Indian coal is characterized by high ash content.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nThe disposal of coal ash is a major environmental challenge. Efforts are being made to promote the utilization of fly ash in various applications like cement manufacturing, brick making, and road construction to minimize disposal impacts.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Consider the following statements: 1. Coal ash contains arsenic, lead and mercury. 2. Coal-fired power plants release sulphur dioxide and oxides of nitrogen into the environment. 3. High ash content is observed in Indian coal. Which of the statements given above is\/are correct? [amp_mcq option1=&#8221;1 only&#8221; option2=&#8221;2 and 3 only&#8221; option3=&#8221;3 only&#8221; option4=&#8221;1, 2 and &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Consider the following statements:\n  1. Coal ash contains arsenic, lea\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-statements-1-coal-ash-contains-arsenic-lea\/#more-91748\">Detailed Solution<span class=\"screen-reader-text\">Consider the following statements:<br \/>\n  1. Coal ash contains arsenic, lea<\/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":[1288,1136,1137],"class_list":["post-91748","post","type-post","status-publish","format-standard","hentry","category-upsc-ias","tag-1288","tag-environment-and-ecology","tag-pollution","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>Consider the following statements:  1. Coal ash contains arsenic, lea<\/title>\n<meta name=\"description\" content=\"Statement 1 is correct: Coal ash (fly ash and bottom ash), a residue from burning coal, contains various heavy metals and toxic substances, including arsenic, lead, mercury, chromium, cadmium, and selenium. Statement 2 is correct: Coal-fired power plants are major sources of air pollution. The combustion process releases sulphur dioxide (SO2) and oxides of nitrogen (NOx) into the atmosphere, which are precursors to acid rain and contribute to respiratory problems. Statement 3 is correct: Indian coal is known for having a relatively high ash content compared to coal found in many other parts of the world. This high ash content poses challenges for power plants in terms of handling and disposal of large volumes of ash and also affects the efficiency of combustion. Coal combustion produces significant environmental pollutants, including toxic ash containing heavy metals and gaseous emissions like SO2 and NOx. Indian coal is characterized by high ash content.\" \/>\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\/consider-the-following-statements-1-coal-ash-contains-arsenic-lea\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Consider the following statements:  1. Coal ash contains arsenic, lea\" \/>\n<meta property=\"og:description\" content=\"Statement 1 is correct: Coal ash (fly ash and bottom ash), a residue from burning coal, contains various heavy metals and toxic substances, including arsenic, lead, mercury, chromium, cadmium, and selenium. Statement 2 is correct: Coal-fired power plants are major sources of air pollution. The combustion process releases sulphur dioxide (SO2) and oxides of nitrogen (NOx) into the atmosphere, which are precursors to acid rain and contribute to respiratory problems. Statement 3 is correct: Indian coal is known for having a relatively high ash content compared to coal found in many other parts of the world. This high ash content poses challenges for power plants in terms of handling and disposal of large volumes of ash and also affects the efficiency of combustion. Coal combustion produces significant environmental pollutants, including toxic ash containing heavy metals and gaseous emissions like SO2 and NOx. Indian coal is characterized by high ash content.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-statements-1-coal-ash-contains-arsenic-lea\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T11:04:55+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":"Consider the following statements:  1. Coal ash contains arsenic, lea","description":"Statement 1 is correct: Coal ash (fly ash and bottom ash), a residue from burning coal, contains various heavy metals and toxic substances, including arsenic, lead, mercury, chromium, cadmium, and selenium. Statement 2 is correct: Coal-fired power plants are major sources of air pollution. The combustion process releases sulphur dioxide (SO2) and oxides of nitrogen (NOx) into the atmosphere, which are precursors to acid rain and contribute to respiratory problems. Statement 3 is correct: Indian coal is known for having a relatively high ash content compared to coal found in many other parts of the world. This high ash content poses challenges for power plants in terms of handling and disposal of large volumes of ash and also affects the efficiency of combustion. Coal combustion produces significant environmental pollutants, including toxic ash containing heavy metals and gaseous emissions like SO2 and NOx. Indian coal is characterized by high ash content.","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\/consider-the-following-statements-1-coal-ash-contains-arsenic-lea\/","og_locale":"en_US","og_type":"article","og_title":"Consider the following statements:  1. Coal ash contains arsenic, lea","og_description":"Statement 1 is correct: Coal ash (fly ash and bottom ash), a residue from burning coal, contains various heavy metals and toxic substances, including arsenic, lead, mercury, chromium, cadmium, and selenium. Statement 2 is correct: Coal-fired power plants are major sources of air pollution. The combustion process releases sulphur dioxide (SO2) and oxides of nitrogen (NOx) into the atmosphere, which are precursors to acid rain and contribute to respiratory problems. Statement 3 is correct: Indian coal is known for having a relatively high ash content compared to coal found in many other parts of the world. This high ash content poses challenges for power plants in terms of handling and disposal of large volumes of ash and also affects the efficiency of combustion. Coal combustion produces significant environmental pollutants, including toxic ash containing heavy metals and gaseous emissions like SO2 and NOx. Indian coal is characterized by high ash content.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-statements-1-coal-ash-contains-arsenic-lea\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T11:04:55+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\/consider-the-following-statements-1-coal-ash-contains-arsenic-lea\/","url":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-statements-1-coal-ash-contains-arsenic-lea\/","name":"Consider the following statements: 1. Coal ash contains arsenic, lea","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T11:04:55+00:00","dateModified":"2025-06-01T11:04:55+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Statement 1 is correct: Coal ash (fly ash and bottom ash), a residue from burning coal, contains various heavy metals and toxic substances, including arsenic, lead, mercury, chromium, cadmium, and selenium. Statement 2 is correct: Coal-fired power plants are major sources of air pollution. The combustion process releases sulphur dioxide (SO2) and oxides of nitrogen (NOx) into the atmosphere, which are precursors to acid rain and contribute to respiratory problems. Statement 3 is correct: Indian coal is known for having a relatively high ash content compared to coal found in many other parts of the world. This high ash content poses challenges for power plants in terms of handling and disposal of large volumes of ash and also affects the efficiency of combustion. Coal combustion produces significant environmental pollutants, including toxic ash containing heavy metals and gaseous emissions like SO2 and NOx. Indian coal is characterized by high ash content.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-statements-1-coal-ash-contains-arsenic-lea\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-statements-1-coal-ash-contains-arsenic-lea\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-statements-1-coal-ash-contains-arsenic-lea\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC IAS","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-ias\/"},{"@type":"ListItem","position":3,"name":"Consider the following statements: 1. Coal ash contains arsenic, lea"}]},{"@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\/91748","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=91748"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/91748\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=91748"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=91748"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=91748"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}