{"id":88231,"date":"2025-06-01T07:06:04","date_gmt":"2025-06-01T07:06:04","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88231"},"modified":"2025-06-01T07:06:04","modified_gmt":"2025-06-01T07:06:04","slug":"statement-i-ozone-is-a-tri-atomic-molecule-of-oxygen-statement-ii","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/statement-i-ozone-is-a-tri-atomic-molecule-of-oxygen-statement-ii\/","title":{"rendered":"Statement I : Ozone is a tri-atomic molecule of oxygen.\nStatement II :"},"content":{"rendered":"

Statement I : Ozone is a tri-atomic molecule of oxygen.
\nStatement II : Ozone is mainly concentrated in stratosphere.<\/p>\n

[amp_mcq option1=”Both the statements are individually true and Statement II is the correct explanation of Statement I” option2=”Both the statements are individually true but Statement II is not the correct explanation of Statement I” option3=”Statement I is true but Statement II is false” option4=”Statement I is false but Statement II is true” correct=”option2″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-2 – 2016<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nStatement I: Ozone is a tri-atomic molecule of oxygen. (True)
\nStatement II: Ozone is mainly concentrated in stratosphere. (True)
\nBoth the statements are individually true but Statement II is not the correct explanation of Statement I.
\n<\/section>\n
\n– Ozone (O3) is a molecule composed of three oxygen atoms. This is its chemical structure.
\n– The ozone layer, where most atmospheric ozone is found, is located primarily in the stratosphere, about 15-35 km above the Earth’s surface.
\n<\/section>\n
\n– Statement I describes the chemical composition of an ozone molecule. Statement II describes the primary location of ozone in the atmosphere.
\n– The location of ozone in the stratosphere is due to its formation process, which involves the photolysis of oxygen molecules (O2) by UV radiation, followed by the combination of resulting oxygen atoms with O2. This process is most efficient in the stratosphere. However, this does not explain *why* the molecule itself has three atoms. The fact that it is tri-atomic is inherent to its chemical form, not dependent on its location.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Statement I : Ozone is a tri-atomic molecule of oxygen. Statement II : Ozone is mainly concentrated in stratosphere. [amp_mcq option1=”Both the statements are individually true and Statement II is the correct explanation of Statement I” option2=”Both the statements are individually true but Statement II is not the correct explanation of Statement I” option3=”Statement I … <\/p>\n

Detailed SolutionStatement I : Ozone is a tri-atomic molecule of oxygen.
\nStatement II :<\/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":[1094],"tags":[1098,1136,1318],"class_list":["post-88231","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1098","tag-environment-and-ecology","tag-ozone-layer","no-featured-image-padding"],"yoast_head":"\nStatement I : Ozone is a tri-atomic molecule of oxygen. Statement II :<\/title>\n<meta name=\"description\" content=\"Statement I: Ozone is a tri-atomic molecule of oxygen. (True) Statement II: Ozone is mainly concentrated in stratosphere. (True) Both the statements are individually true but Statement II is not the correct explanation of Statement I. - Ozone (O3) is a molecule composed of three oxygen atoms. This is its chemical structure. - The ozone layer, where most atmospheric ozone is found, is located primarily in the stratosphere, about 15-35 km above the Earth's surface.\" \/>\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\/statement-i-ozone-is-a-tri-atomic-molecule-of-oxygen-statement-ii\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Statement I : Ozone is a tri-atomic molecule of oxygen. Statement II :\" \/>\n<meta property=\"og:description\" content=\"Statement I: Ozone is a tri-atomic molecule of oxygen. (True) Statement II: Ozone is mainly concentrated in stratosphere. (True) Both the statements are individually true but Statement II is not the correct explanation of Statement I. - Ozone (O3) is a molecule composed of three oxygen atoms. This is its chemical structure. - The ozone layer, where most atmospheric ozone is found, is located primarily in the stratosphere, about 15-35 km above the Earth's surface.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/statement-i-ozone-is-a-tri-atomic-molecule-of-oxygen-statement-ii\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:06:04+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":"Statement I : Ozone is a tri-atomic molecule of oxygen. Statement II :","description":"Statement I: Ozone is a tri-atomic molecule of oxygen. (True) Statement II: Ozone is mainly concentrated in stratosphere. (True) Both the statements are individually true but Statement II is not the correct explanation of Statement I. - Ozone (O3) is a molecule composed of three oxygen atoms. This is its chemical structure. - The ozone layer, where most atmospheric ozone is found, is located primarily in the stratosphere, about 15-35 km above the Earth's surface.","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\/statement-i-ozone-is-a-tri-atomic-molecule-of-oxygen-statement-ii\/","og_locale":"en_US","og_type":"article","og_title":"Statement I : Ozone is a tri-atomic molecule of oxygen. Statement II :","og_description":"Statement I: Ozone is a tri-atomic molecule of oxygen. (True) Statement II: Ozone is mainly concentrated in stratosphere. (True) Both the statements are individually true but Statement II is not the correct explanation of Statement I. - Ozone (O3) is a molecule composed of three oxygen atoms. This is its chemical structure. - The ozone layer, where most atmospheric ozone is found, is located primarily in the stratosphere, about 15-35 km above the Earth's surface.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/statement-i-ozone-is-a-tri-atomic-molecule-of-oxygen-statement-ii\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T07:06:04+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\/statement-i-ozone-is-a-tri-atomic-molecule-of-oxygen-statement-ii\/","url":"https:\/\/exam.pscnotes.com\/mcq\/statement-i-ozone-is-a-tri-atomic-molecule-of-oxygen-statement-ii\/","name":"Statement I : Ozone is a tri-atomic molecule of oxygen. Statement II :","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T07:06:04+00:00","dateModified":"2025-06-01T07:06:04+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Statement I: Ozone is a tri-atomic molecule of oxygen. (True) Statement II: Ozone is mainly concentrated in stratosphere. (True) Both the statements are individually true but Statement II is not the correct explanation of Statement I. - Ozone (O3) is a molecule composed of three oxygen atoms. This is its chemical structure. - The ozone layer, where most atmospheric ozone is found, is located primarily in the stratosphere, about 15-35 km above the Earth's surface.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/statement-i-ozone-is-a-tri-atomic-molecule-of-oxygen-statement-ii\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/statement-i-ozone-is-a-tri-atomic-molecule-of-oxygen-statement-ii\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/statement-i-ozone-is-a-tri-atomic-molecule-of-oxygen-statement-ii\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC NDA-2","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-nda-2\/"},{"@type":"ListItem","position":3,"name":"Statement I : Ozone is a tri-atomic molecule of oxygen. Statement II :"}]},{"@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\/88231","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=88231"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/88231\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=88231"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=88231"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=88231"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}