{"id":91928,"date":"2025-06-01T11:09:24","date_gmt":"2025-06-01T11:09:24","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=91928"},"modified":"2025-06-01T11:09:24","modified_gmt":"2025-06-01T11:09:24","slug":"consider-the-following-carbon-monoxide-nitrogen-oxide-ozone-sul","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-carbon-monoxide-nitrogen-oxide-ozone-sul\/","title":{"rendered":"Consider the following :\n  Carbon monoxide  Nitrogen oxide  Ozone  Sul"},"content":{"rendered":"<p>Consider the following :<\/p>\n<ul>\n<li>Carbon monoxide<\/li>\n<li>Nitrogen oxide<\/li>\n<li>Ozone<\/li>\n<li>Sulphur dioxide<\/li>\n<\/ul>\n<p>Excess of which of the above in the environment is\/are cause(s) of acid rain ?<\/p>\n<p>[amp_mcq option1=&#8221;1, 2 and 3&#8243; option2=&#8221;2 and 4 only&#8221; option3=&#8221;4 only&#8221; option4=&#8221;1, 3 and 4&#8243; correct=&#8221;option2&#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; 2022<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-ias-2022.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-ias-2022\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nThe correct answer is B) 2 and 4 only.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\nAcid rain is primarily caused by atmospheric pollutants, specifically sulfur dioxide (SO\u2082) and nitrogen oxides (NOx). These gases react with water, oxygen, and other chemicals in the atmosphere to form sulfuric acid and nitric acid.<br \/>\nStatement 1 (Carbon monoxide) is incorrect. Carbon monoxide (CO) is a pollutant but does not cause acid rain.<br \/>\nStatement 2 (Nitrogen oxide) is correct. Nitrogen oxides (NOx, including NO and NO\u2082) are major precursors to nitric acid formation in acid rain.<br \/>\nStatement 3 (Ozone) is incorrect. Ozone (O\u2083) is a secondary pollutant and a greenhouse gas. While it can contribute to the oxidation processes that form acid rain from SO\u2082 and NOx, it is not a precursor acid gas itself and is not considered a primary cause in the same way as SO\u2082 and NOx.<br \/>\nStatement 4 (Sulphur dioxide) is correct. Sulphur dioxide (SO\u2082) is a major precursor to sulfuric acid formation in acid rain.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nThe main sources of SO\u2082 and NOx emissions are the burning of fossil fuels (coal, oil, natural gas) in power plants, industries, and vehicles. Acid rain can harm forests, lakes, streams, and damage buildings and monuments.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Consider the following : Carbon monoxide Nitrogen oxide Ozone Sulphur dioxide Excess of which of the above in the environment is\/are cause(s) of acid rain ? [amp_mcq option1=&#8221;1, 2 and 3&#8243; option2=&#8221;2 and 4 only&#8221; option3=&#8221;4 only&#8221; option4=&#8221;1, 3 and 4&#8243; correct=&#8221;option2&#8243;] This question was previously asked in UPSC IAS &#8211; 2022 Download PDFAttempt Online &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Consider the following :\n  Carbon monoxide  Nitrogen oxide  Ozone  Sul\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-carbon-monoxide-nitrogen-oxide-ozone-sul\/#more-91928\">Detailed Solution<span class=\"screen-reader-text\">Consider the following :<br \/>\n  Carbon monoxide  Nitrogen oxide  Ozone  Sul<\/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":[1108,1136,1137],"class_list":["post-91928","post","type-post","status-publish","format-standard","hentry","category-upsc-ias","tag-1108","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 :  Carbon monoxide Nitrogen oxide Ozone Sul<\/title>\n<meta name=\"description\" content=\"The correct answer is B) 2 and 4 only. Acid rain is primarily caused by atmospheric pollutants, specifically sulfur dioxide (SO\u2082) and nitrogen oxides (NOx). These gases react with water, oxygen, and other chemicals in the atmosphere to form sulfuric acid and nitric acid. Statement 1 (Carbon monoxide) is incorrect. Carbon monoxide (CO) is a pollutant but does not cause acid rain. Statement 2 (Nitrogen oxide) is correct. Nitrogen oxides (NOx, including NO and NO\u2082) are major precursors to nitric acid formation in acid rain. Statement 3 (Ozone) is incorrect. Ozone (O\u2083) is a secondary pollutant and a greenhouse gas. While it can contribute to the oxidation processes that form acid rain from SO\u2082 and NOx, it is not a precursor acid gas itself and is not considered a primary cause in the same way as SO\u2082 and NOx. Statement 4 (Sulphur dioxide) is correct. Sulphur dioxide (SO\u2082) is a major precursor to sulfuric acid formation in acid rain.\" \/>\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-carbon-monoxide-nitrogen-oxide-ozone-sul\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Consider the following :  Carbon monoxide Nitrogen oxide Ozone Sul\" \/>\n<meta property=\"og:description\" content=\"The correct answer is B) 2 and 4 only. Acid rain is primarily caused by atmospheric pollutants, specifically sulfur dioxide (SO\u2082) and nitrogen oxides (NOx). These gases react with water, oxygen, and other chemicals in the atmosphere to form sulfuric acid and nitric acid. Statement 1 (Carbon monoxide) is incorrect. Carbon monoxide (CO) is a pollutant but does not cause acid rain. Statement 2 (Nitrogen oxide) is correct. Nitrogen oxides (NOx, including NO and NO\u2082) are major precursors to nitric acid formation in acid rain. Statement 3 (Ozone) is incorrect. Ozone (O\u2083) is a secondary pollutant and a greenhouse gas. While it can contribute to the oxidation processes that form acid rain from SO\u2082 and NOx, it is not a precursor acid gas itself and is not considered a primary cause in the same way as SO\u2082 and NOx. Statement 4 (Sulphur dioxide) is correct. Sulphur dioxide (SO\u2082) is a major precursor to sulfuric acid formation in acid rain.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-carbon-monoxide-nitrogen-oxide-ozone-sul\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T11:09:24+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 :  Carbon monoxide Nitrogen oxide Ozone Sul","description":"The correct answer is B) 2 and 4 only. Acid rain is primarily caused by atmospheric pollutants, specifically sulfur dioxide (SO\u2082) and nitrogen oxides (NOx). These gases react with water, oxygen, and other chemicals in the atmosphere to form sulfuric acid and nitric acid. Statement 1 (Carbon monoxide) is incorrect. Carbon monoxide (CO) is a pollutant but does not cause acid rain. Statement 2 (Nitrogen oxide) is correct. Nitrogen oxides (NOx, including NO and NO\u2082) are major precursors to nitric acid formation in acid rain. Statement 3 (Ozone) is incorrect. Ozone (O\u2083) is a secondary pollutant and a greenhouse gas. While it can contribute to the oxidation processes that form acid rain from SO\u2082 and NOx, it is not a precursor acid gas itself and is not considered a primary cause in the same way as SO\u2082 and NOx. Statement 4 (Sulphur dioxide) is correct. Sulphur dioxide (SO\u2082) is a major precursor to sulfuric acid formation in acid rain.","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-carbon-monoxide-nitrogen-oxide-ozone-sul\/","og_locale":"en_US","og_type":"article","og_title":"Consider the following :  Carbon monoxide Nitrogen oxide Ozone Sul","og_description":"The correct answer is B) 2 and 4 only. Acid rain is primarily caused by atmospheric pollutants, specifically sulfur dioxide (SO\u2082) and nitrogen oxides (NOx). These gases react with water, oxygen, and other chemicals in the atmosphere to form sulfuric acid and nitric acid. Statement 1 (Carbon monoxide) is incorrect. Carbon monoxide (CO) is a pollutant but does not cause acid rain. Statement 2 (Nitrogen oxide) is correct. Nitrogen oxides (NOx, including NO and NO\u2082) are major precursors to nitric acid formation in acid rain. Statement 3 (Ozone) is incorrect. Ozone (O\u2083) is a secondary pollutant and a greenhouse gas. While it can contribute to the oxidation processes that form acid rain from SO\u2082 and NOx, it is not a precursor acid gas itself and is not considered a primary cause in the same way as SO\u2082 and NOx. Statement 4 (Sulphur dioxide) is correct. Sulphur dioxide (SO\u2082) is a major precursor to sulfuric acid formation in acid rain.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-carbon-monoxide-nitrogen-oxide-ozone-sul\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T11:09:24+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-carbon-monoxide-nitrogen-oxide-ozone-sul\/","url":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-carbon-monoxide-nitrogen-oxide-ozone-sul\/","name":"Consider the following : Carbon monoxide Nitrogen oxide Ozone Sul","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T11:09:24+00:00","dateModified":"2025-06-01T11:09:24+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The correct answer is B) 2 and 4 only. Acid rain is primarily caused by atmospheric pollutants, specifically sulfur dioxide (SO\u2082) and nitrogen oxides (NOx). These gases react with water, oxygen, and other chemicals in the atmosphere to form sulfuric acid and nitric acid. Statement 1 (Carbon monoxide) is incorrect. Carbon monoxide (CO) is a pollutant but does not cause acid rain. Statement 2 (Nitrogen oxide) is correct. Nitrogen oxides (NOx, including NO and NO\u2082) are major precursors to nitric acid formation in acid rain. Statement 3 (Ozone) is incorrect. Ozone (O\u2083) is a secondary pollutant and a greenhouse gas. While it can contribute to the oxidation processes that form acid rain from SO\u2082 and NOx, it is not a precursor acid gas itself and is not considered a primary cause in the same way as SO\u2082 and NOx. Statement 4 (Sulphur dioxide) is correct. Sulphur dioxide (SO\u2082) is a major precursor to sulfuric acid formation in acid rain.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-carbon-monoxide-nitrogen-oxide-ozone-sul\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-carbon-monoxide-nitrogen-oxide-ozone-sul\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-carbon-monoxide-nitrogen-oxide-ozone-sul\/#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 : Carbon monoxide Nitrogen oxide Ozone Sul"}]},{"@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\/91928","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=91928"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/91928\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=91928"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=91928"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=91928"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}