{"id":88181,"date":"2025-06-01T07:04:06","date_gmt":"2025-06-01T07:04:06","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88181"},"modified":"2025-06-01T07:04:06","modified_gmt":"2025-06-01T07:04:06","slug":"which-one-of-the-following-gases-is-found-in-highest-quantity-in","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-gases-is-found-in-highest-quantity-in\/","title":{"rendered":"Which one of the following gases is found in highest quantity in"},"content":{"rendered":"

Which one of the following gases is found in highest quantity in Exosphere?<\/p>\n

[amp_mcq option1=”Hydrogen” option2=”Helium” option3=”Nitrogen” option4=”Oxygen” correct=”option1″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-2 – 2015<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe correct option is A, Hydrogen.
\n<\/section>\n
\nThe exosphere is the outermost layer of the Earth’s atmosphere, extending upwards from the thermosphere and gradually thinning into space. The gases in this region are extremely sparse. Due to their very low atomic mass, hydrogen and helium are the most abundant constituents, as they are light enough to reach these high altitudes and potentially escape Earth’s gravity. Hydrogen is generally considered the dominant gas in the outermost reaches of the exosphere. Heavier gases like nitrogen and oxygen are much more concentrated in the lower atmospheric layers.
\n<\/section>\n
\nThe exosphere is characterized by extremely low density and consists primarily of hydrogen, helium, and some heavier atoms and molecules near its base. This region marks the transition between Earth’s atmosphere and the vacuum of outer space. Temperature in the exosphere is highly variable and not representative of heat content due to the low particle density.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following gases is found in highest quantity in Exosphere? [amp_mcq option1=”Hydrogen” option2=”Helium” option3=”Nitrogen” option4=”Oxygen” correct=”option1″] This question was previously asked in UPSC NDA-2 – 2015 Download PDFAttempt Online The correct option is A, Hydrogen. The exosphere is the outermost layer of the Earth’s atmosphere, extending upwards from the thermosphere and gradually … <\/p>\n

Detailed SolutionWhich one of the following gases is found in highest quantity in<\/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":[1443,1107,1106],"class_list":["post-88181","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1443","tag-the-atmosphere","tag-world-and-physical-geography","no-featured-image-padding"],"yoast_head":"\nWhich one of the following gases is found in highest quantity in<\/title>\n<meta name=\"description\" content=\"The correct option is A, Hydrogen. The exosphere is the outermost layer of the Earth's atmosphere, extending upwards from the thermosphere and gradually thinning into space. The gases in this region are extremely sparse. Due to their very low atomic mass, hydrogen and helium are the most abundant constituents, as they are light enough to reach these high altitudes and potentially escape Earth's gravity. Hydrogen is generally considered the dominant gas in the outermost reaches of the exosphere. Heavier gases like nitrogen and oxygen are much more concentrated in the lower atmospheric layers.\" \/>\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-of-the-following-gases-is-found-in-highest-quantity-in\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following gases is found in highest quantity in\" \/>\n<meta property=\"og:description\" content=\"The correct option is A, Hydrogen. The exosphere is the outermost layer of the Earth's atmosphere, extending upwards from the thermosphere and gradually thinning into space. The gases in this region are extremely sparse. Due to their very low atomic mass, hydrogen and helium are the most abundant constituents, as they are light enough to reach these high altitudes and potentially escape Earth's gravity. Hydrogen is generally considered the dominant gas in the outermost reaches of the exosphere. Heavier gases like nitrogen and oxygen are much more concentrated in the lower atmospheric layers.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-gases-is-found-in-highest-quantity-in\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:04:06+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 of the following gases is found in highest quantity in","description":"The correct option is A, Hydrogen. The exosphere is the outermost layer of the Earth's atmosphere, extending upwards from the thermosphere and gradually thinning into space. The gases in this region are extremely sparse. Due to their very low atomic mass, hydrogen and helium are the most abundant constituents, as they are light enough to reach these high altitudes and potentially escape Earth's gravity. Hydrogen is generally considered the dominant gas in the outermost reaches of the exosphere. Heavier gases like nitrogen and oxygen are much more concentrated in the lower atmospheric layers.","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-of-the-following-gases-is-found-in-highest-quantity-in\/","og_locale":"en_US","og_type":"article","og_title":"Which one of the following gases is found in highest quantity in","og_description":"The correct option is A, Hydrogen. The exosphere is the outermost layer of the Earth's atmosphere, extending upwards from the thermosphere and gradually thinning into space. The gases in this region are extremely sparse. Due to their very low atomic mass, hydrogen and helium are the most abundant constituents, as they are light enough to reach these high altitudes and potentially escape Earth's gravity. Hydrogen is generally considered the dominant gas in the outermost reaches of the exosphere. Heavier gases like nitrogen and oxygen are much more concentrated in the lower atmospheric layers.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-gases-is-found-in-highest-quantity-in\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T07:04:06+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-of-the-following-gases-is-found-in-highest-quantity-in\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-gases-is-found-in-highest-quantity-in\/","name":"Which one of the following gases is found in highest quantity in","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T07:04:06+00:00","dateModified":"2025-06-01T07:04:06+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The correct option is A, Hydrogen. The exosphere is the outermost layer of the Earth's atmosphere, extending upwards from the thermosphere and gradually thinning into space. The gases in this region are extremely sparse. Due to their very low atomic mass, hydrogen and helium are the most abundant constituents, as they are light enough to reach these high altitudes and potentially escape Earth's gravity. Hydrogen is generally considered the dominant gas in the outermost reaches of the exosphere. 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