{"id":88848,"date":"2025-06-01T07:23:25","date_gmt":"2025-06-01T07:23:25","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88848"},"modified":"2025-06-01T07:23:25","modified_gmt":"2025-06-01T07:23:25","slug":"to-help-deep-sea-divers-breathe-they-carry-cylinders-of-oxygen-mixed","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/to-help-deep-sea-divers-breathe-they-carry-cylinders-of-oxygen-mixed\/","title":{"rendered":"To help deep-sea divers breathe, they carry cylinders of oxygen mixed"},"content":{"rendered":"

To help deep-sea divers breathe, they carry cylinders of oxygen mixed with<\/p>\n

[amp_mcq option1=”chlorine” option2=”helium” option3=”nitrogen” option4=”ozone” correct=”option2″]<\/p>\n

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\n
This question was previously asked in<\/div>\n
UPSC NDA-2 – 2022<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nTo help deep-sea divers breathe, they carry cylinders of oxygen mixed with helium.
\n<\/section>\n
\nAt high pressures experienced during deep-sea dives, the nitrogen in air can cause nitrogen narcosis, which impairs judgment and coordination. Oxygen at high partial pressures can also become toxic. To avoid these issues, the breathing gas mixture often replaces nitrogen with helium, which is less narcotic and also less dense than nitrogen, making breathing easier at depth. This mixture of oxygen and helium is called Heliox.
\n<\/section>\n
\nOther gas mixtures like Trimix (oxygen, helium, and nitrogen) are also used depending on the depth and duration of the dive. Chlorine and ozone are toxic gases and would not be used in breathing mixtures.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

To help deep-sea divers breathe, they carry cylinders of oxygen mixed with [amp_mcq option1=”chlorine” option2=”helium” option3=”nitrogen” option4=”ozone” correct=”option2″] This question was previously asked in UPSC NDA-2 – 2022 Download PDFAttempt Online To help deep-sea divers breathe, they carry cylinders of oxygen mixed with helium. At high pressures experienced during deep-sea dives, the nitrogen in air … <\/p>\n

Detailed SolutionTo help deep-sea divers breathe, they carry cylinders of oxygen mixed<\/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":[1108,1096,1245],"class_list":["post-88848","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1108","tag-chemistry","tag-sulphur-nitrogen-halogen-inert-gases","no-featured-image-padding"],"yoast_head":"\nTo help deep-sea divers breathe, they carry cylinders of oxygen mixed<\/title>\n<meta name=\"description\" content=\"To help deep-sea divers breathe, they carry cylinders of oxygen mixed with helium. At high pressures experienced during deep-sea dives, the nitrogen in air can cause nitrogen narcosis, which impairs judgment and coordination. Oxygen at high partial pressures can also become toxic. To avoid these issues, the breathing gas mixture often replaces nitrogen with helium, which is less narcotic and also less dense than nitrogen, making breathing easier at depth. This mixture of oxygen and helium is called Heliox.\" \/>\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\/to-help-deep-sea-divers-breathe-they-carry-cylinders-of-oxygen-mixed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"To help deep-sea divers breathe, they carry cylinders of oxygen mixed\" \/>\n<meta property=\"og:description\" content=\"To help deep-sea divers breathe, they carry cylinders of oxygen mixed with helium. At high pressures experienced during deep-sea dives, the nitrogen in air can cause nitrogen narcosis, which impairs judgment and coordination. Oxygen at high partial pressures can also become toxic. To avoid these issues, the breathing gas mixture often replaces nitrogen with helium, which is less narcotic and also less dense than nitrogen, making breathing easier at depth. This mixture of oxygen and helium is called Heliox.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/to-help-deep-sea-divers-breathe-they-carry-cylinders-of-oxygen-mixed\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:23:25+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":"To help deep-sea divers breathe, they carry cylinders of oxygen mixed","description":"To help deep-sea divers breathe, they carry cylinders of oxygen mixed with helium. 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At high pressures experienced during deep-sea dives, the nitrogen in air can cause nitrogen narcosis, which impairs judgment and coordination. Oxygen at high partial pressures can also become toxic. To avoid these issues, the breathing gas mixture often replaces nitrogen with helium, which is less narcotic and also less dense than nitrogen, making breathing easier at depth. 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