{"id":88177,"date":"2025-06-01T07:04:01","date_gmt":"2025-06-01T07:04:01","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88177"},"modified":"2025-06-01T07:04:01","modified_gmt":"2025-06-01T07:04:01","slug":"to-weld-metals-together-high-temperature-is-required-such-a-high-tem","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/to-weld-metals-together-high-temperature-is-required-such-a-high-tem\/","title":{"rendered":"To weld metals together, high temperature is required. Such a high tem"},"content":{"rendered":"

To weld metals together, high temperature is required. Such a high temperature is obtained by burning:<\/p>\n

[amp_mcq option1=”Acetylene in oxygen” option2=”LPG in oxygen” option3=”Methane in oxygen” option4=”Acetylene in nitrogen” 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, Acetylene in oxygen.
\n<\/section>\n
\nWelding requires a high-temperature flame to melt and fuse metals. The combustion of acetylene (C\u2082H\u2082) with oxygen (O\u2082) produces an oxy-acetylene flame, which can reach temperatures of around 3500 \u00b0C, making it suitable for welding. Other fuel gases like LPG and methane produce lower temperatures when burned with oxygen. Burning acetylene in nitrogen would not sustain combustion as nitrogen is inert and would not provide the necessary oxidant.
\n<\/section>\n
\nOxy-acetylene welding is a common process used for welding, cutting, and heating metals. The high temperature is achieved by using pure oxygen as the oxidant instead of air, which contains about 78% nitrogen and would limit the flame temperature. Different ratios of acetylene to oxygen can produce oxidizing, neutral, or carburizing flames, used for various applications.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

To weld metals together, high temperature is required. Such a high temperature is obtained by burning: [amp_mcq option1=”Acetylene in oxygen” option2=”LPG in oxygen” option3=”Methane in oxygen” option4=”Acetylene in nitrogen” correct=”option1″] This question was previously asked in UPSC NDA-2 – 2015 Download PDFAttempt Online The correct option is A, Acetylene in oxygen. Welding requires a high-temperature … <\/p>\n

Detailed SolutionTo weld metals together, high temperature is required. Such a high tem<\/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":[1443,1096,1330],"class_list":["post-88177","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1443","tag-chemistry","tag-hydrocarbons","no-featured-image-padding"],"yoast_head":"\nTo weld metals together, high temperature is required. Such a high tem<\/title>\n<meta name=\"description\" content=\"The correct option is A, Acetylene in oxygen. Welding requires a high-temperature flame to melt and fuse metals. The combustion of acetylene (C\u2082H\u2082) with oxygen (O\u2082) produces an oxy-acetylene flame, which can reach temperatures of around 3500 \u00b0C, making it suitable for welding. Other fuel gases like LPG and methane produce lower temperatures when burned with oxygen. Burning acetylene in nitrogen would not sustain combustion as nitrogen is inert and would not provide the necessary oxidant.\" \/>\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-weld-metals-together-high-temperature-is-required-such-a-high-tem\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"To weld metals together, high temperature is required. Such a high tem\" \/>\n<meta property=\"og:description\" content=\"The correct option is A, Acetylene in oxygen. Welding requires a high-temperature flame to melt and fuse metals. The combustion of acetylene (C\u2082H\u2082) with oxygen (O\u2082) produces an oxy-acetylene flame, which can reach temperatures of around 3500 \u00b0C, making it suitable for welding. Other fuel gases like LPG and methane produce lower temperatures when burned with oxygen. Burning acetylene in nitrogen would not sustain combustion as nitrogen is inert and would not provide the necessary oxidant.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/to-weld-metals-together-high-temperature-is-required-such-a-high-tem\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:04:01+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 weld metals together, high temperature is required. Such a high tem","description":"The correct option is A, Acetylene in oxygen. Welding requires a high-temperature flame to melt and fuse metals. The combustion of acetylene (C\u2082H\u2082) with oxygen (O\u2082) produces an oxy-acetylene flame, which can reach temperatures of around 3500 \u00b0C, making it suitable for welding. Other fuel gases like LPG and methane produce lower temperatures when burned with oxygen. Burning acetylene in nitrogen would not sustain combustion as nitrogen is inert and would not provide the necessary oxidant.","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\/to-weld-metals-together-high-temperature-is-required-such-a-high-tem\/","og_locale":"en_US","og_type":"article","og_title":"To weld metals together, high temperature is required. Such a high tem","og_description":"The correct option is A, Acetylene in oxygen. Welding requires a high-temperature flame to melt and fuse metals. The combustion of acetylene (C\u2082H\u2082) with oxygen (O\u2082) produces an oxy-acetylene flame, which can reach temperatures of around 3500 \u00b0C, making it suitable for welding. Other fuel gases like LPG and methane produce lower temperatures when burned with oxygen. Burning acetylene in nitrogen would not sustain combustion as nitrogen is inert and would not provide the necessary oxidant.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/to-weld-metals-together-high-temperature-is-required-such-a-high-tem\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T07:04:01+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\/to-weld-metals-together-high-temperature-is-required-such-a-high-tem\/","url":"https:\/\/exam.pscnotes.com\/mcq\/to-weld-metals-together-high-temperature-is-required-such-a-high-tem\/","name":"To weld metals together, high temperature is required. Such a high tem","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T07:04:01+00:00","dateModified":"2025-06-01T07:04:01+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The correct option is A, Acetylene in oxygen. Welding requires a high-temperature flame to melt and fuse metals. The combustion of acetylene (C\u2082H\u2082) with oxygen (O\u2082) produces an oxy-acetylene flame, which can reach temperatures of around 3500 \u00b0C, making it suitable for welding. Other fuel gases like LPG and methane produce lower temperatures when burned with oxygen. 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