{"id":90814,"date":"2025-06-01T10:38:11","date_gmt":"2025-06-01T10:38:11","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=90814"},"modified":"2025-06-01T10:38:11","modified_gmt":"2025-06-01T10:38:11","slug":"which-one-is-the-most-abundant-of-all-the-elements-on-earth","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-is-the-most-abundant-of-all-the-elements-on-earth\/","title":{"rendered":"Which one is the most abundant of all the elements on Earth?"},"content":{"rendered":"

Which one is the most abundant of all the elements on Earth?<\/p>\n

[amp_mcq option1=”Silicon” option2=”Aluminium” option3=”Carbon” option4=”Oxygen” correct=”option4″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CAPF – 2023<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nAmong the given options, Oxygen (O) is the most abundant element on Earth, particularly in the Earth’s crust, which is the most accessible part of the Earth’s solid sphere. By weight, Oxygen makes up about 46.6% of the Earth’s crust.
\n<\/section>\n
\nThe elemental composition of the Earth’s crust differs from that of the entire Earth. For the Earth’s crust, the most abundant elements by weight are: Oxygen (O) > Silicon (Si) > Aluminium (Al) > Iron (Fe) > Calcium (Ca) > Sodium (Na) > Potassium (K) > Magnesium (Mg). If considering the entire Earth, Iron is the most abundant element, followed by Oxygen, Silicon, and Magnesium, as the core is primarily composed of iron and nickel.
\n<\/section>\n
\nSilicon is the second most abundant element in the Earth’s crust (about 27.7%). Aluminium is the third most abundant (about 8.1%). Carbon is a crucial element for life but is far less abundant overall compared to Oxygen, Silicon, and Aluminium in the Earth’s crust. Given the options, Oxygen is clearly the most abundant.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one is the most abundant of all the elements on Earth? [amp_mcq option1=”Silicon” option2=”Aluminium” option3=”Carbon” option4=”Oxygen” correct=”option4″] This question was previously asked in UPSC CAPF – 2023 Download PDFAttempt Online Among the given options, Oxygen (O) is the most abundant element on Earth, particularly in the Earth’s crust, which is the most accessible part … <\/p>\n

Detailed SolutionWhich one is the most abundant of all the elements on Earth?<\/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":[1085],"tags":[1105,1096,1115],"class_list":["post-90814","post","type-post","status-publish","format-standard","hentry","category-upsc-capf","tag-1105","tag-chemistry","tag-miscellaneous","no-featured-image-padding"],"yoast_head":"\nWhich one is the most abundant of all the elements on Earth?<\/title>\n<meta name=\"description\" content=\"Among the given options, Oxygen (O) is the most abundant element on Earth, particularly in the Earth's crust, which is the most accessible part of the Earth's solid sphere. By weight, Oxygen makes up about 46.6% of the Earth's crust. The elemental composition of the Earth's crust differs from that of the entire Earth. For the Earth's crust, the most abundant elements by weight are: Oxygen (O) > Silicon (Si) > Aluminium (Al) > Iron (Fe) > Calcium (Ca) > Sodium (Na) > Potassium (K) > Magnesium (Mg). If considering the entire Earth, Iron is the most abundant element, followed by Oxygen, Silicon, and Magnesium, as the core is primarily composed of iron and nickel.\" \/>\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-is-the-most-abundant-of-all-the-elements-on-earth\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one is the most abundant of all the elements on Earth?\" \/>\n<meta property=\"og:description\" content=\"Among the given options, Oxygen (O) is the most abundant element on Earth, particularly in the Earth's crust, which is the most accessible part of the Earth's solid sphere. By weight, Oxygen makes up about 46.6% of the Earth's crust. The elemental composition of the Earth's crust differs from that of the entire Earth. For the Earth's crust, the most abundant elements by weight are: Oxygen (O) > Silicon (Si) > Aluminium (Al) > Iron (Fe) > Calcium (Ca) > Sodium (Na) > Potassium (K) > Magnesium (Mg). If considering the entire Earth, Iron is the most abundant element, followed by Oxygen, Silicon, and Magnesium, as the core is primarily composed of iron and nickel.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-is-the-most-abundant-of-all-the-elements-on-earth\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:38:11+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 is the most abundant of all the elements on Earth?","description":"Among the given options, Oxygen (O) is the most abundant element on Earth, particularly in the Earth's crust, which is the most accessible part of the Earth's solid sphere. By weight, Oxygen makes up about 46.6% of the Earth's crust. The elemental composition of the Earth's crust differs from that of the entire Earth. For the Earth's crust, the most abundant elements by weight are: Oxygen (O) > Silicon (Si) > Aluminium (Al) > Iron (Fe) > Calcium (Ca) > Sodium (Na) > Potassium (K) > Magnesium (Mg). If considering the entire Earth, Iron is the most abundant element, followed by Oxygen, Silicon, and Magnesium, as the core is primarily composed of iron and nickel.","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-is-the-most-abundant-of-all-the-elements-on-earth\/","og_locale":"en_US","og_type":"article","og_title":"Which one is the most abundant of all the elements on Earth?","og_description":"Among the given options, Oxygen (O) is the most abundant element on Earth, particularly in the Earth's crust, which is the most accessible part of the Earth's solid sphere. By weight, Oxygen makes up about 46.6% of the Earth's crust. The elemental composition of the Earth's crust differs from that of the entire Earth. For the Earth's crust, the most abundant elements by weight are: Oxygen (O) > Silicon (Si) > Aluminium (Al) > Iron (Fe) > Calcium (Ca) > Sodium (Na) > Potassium (K) > Magnesium (Mg). If considering the entire Earth, Iron is the most abundant element, followed by Oxygen, Silicon, and Magnesium, as the core is primarily composed of iron and nickel.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-is-the-most-abundant-of-all-the-elements-on-earth\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T10:38:11+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\/which-one-is-the-most-abundant-of-all-the-elements-on-earth\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-is-the-most-abundant-of-all-the-elements-on-earth\/","name":"Which one is the most abundant of all the elements on Earth?","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T10:38:11+00:00","dateModified":"2025-06-01T10:38:11+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Among the given options, Oxygen (O) is the most abundant element on Earth, particularly in the Earth's crust, which is the most accessible part of the Earth's solid sphere. 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