{"id":85385,"date":"2025-06-01T03:15:06","date_gmt":"2025-06-01T03:15:06","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=85385"},"modified":"2025-06-01T03:15:06","modified_gmt":"2025-06-01T03:15:06","slug":"which-of-the-following-statements-are-true-for-the-reaction-of-fe%e2%82%82o%e2%82%83-w","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-true-for-the-reaction-of-fe%e2%82%82o%e2%82%83-w\/","title":{"rendered":"Which of the following statements are true for the reaction of Fe\u2082O\u2083 w"},"content":{"rendered":"<p>Which of the following statements are true for the reaction of Fe\u2082O\u2083 with aluminium?<\/p>\n<ul>\n<li>1. It is known as the &#8216;thermite reaction&#8217;.<\/li>\n<li>2. The heat evolved is used for welding purpose.<\/li>\n<li>3. Aluminium metal acts as an oxidizing agent.<\/li>\n<li>4. Molten Fe and Al are formed at the end of the reaction.<\/li>\n<\/ul>\n<p>Select the correct answer using the code given below.<\/p>\n<p>[amp_mcq option1=&#8221;1 and 2&#8243; option2=&#8221;1 and 3&#8243; option3=&#8221;2 and 4&#8243; option4=&#8221;1 and 4&#8243; correct=&#8221;option1&#8243;]<\/p>\n<div class=\"psc-box-pyq-exam-year-detail\">\n<div class=\"pyq-exam\">\n<div class=\"psc-heading\">This question was previously asked in<\/div>\n<div class=\"psc-title line-ellipsis\">UPSC CDS-1 &#8211; 2023<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-cds-1-2023.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-cds-1-2023\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nThe reaction of Fe\u2082O\u2083 with aluminium is a highly exothermic displacement reaction where aluminium, being more reactive than iron, reduces iron(III) oxide to molten iron. The balanced chemical equation is 2Al + Fe\u2082O\u2083 \u2192 Al\u2082O\u2083 + 2Fe + Heat.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\n&#8211; Statement 1 is correct: This reaction is famously known as the thermite reaction.<br \/>\n&#8211; Statement 2 is correct: The large amount of heat produced in the thermite reaction results in molten iron, which is used for welding broken railway tracks or cracked machine parts (thermite welding).<br \/>\n&#8211; Statement 3 is incorrect: Aluminium acts as a reducing agent because it removes oxygen from Fe\u2082O\u2083. Iron(III) oxide (Fe\u2082O\u2083) acts as the oxidizing agent.<br \/>\n&#8211; Statement 4 is incorrect: Molten iron (Fe) is formed at the end of the reaction. Aluminium is converted to aluminium oxide (Al\u2082O\u2083), not molten aluminium metal.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nThe thermite reaction involves a redox process. Aluminium is oxidized (gains oxygen), and iron is reduced (loses oxygen). The reaction produces a significant amount of heat, reaching temperatures up to 2500\u00b0C, which is why the iron is produced in a molten state.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Which of the following statements are true for the reaction of Fe\u2082O\u2083 with aluminium? 1. It is known as the &#8216;thermite reaction&#8217;. 2. The heat evolved is used for welding purpose. 3. Aluminium metal acts as an oxidizing agent. 4. Molten Fe and Al are formed at the end of the reaction. Select the correct &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Which of the following statements are true for the reaction of Fe\u2082O\u2083 w\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-true-for-the-reaction-of-fe%e2%82%82o%e2%82%83-w\/#more-85385\">Detailed Solution<span class=\"screen-reader-text\">Which of the following statements are true for the reaction of Fe\u2082O\u2083 w<\/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":[1087],"tags":[1105,1096,1109],"class_list":["post-85385","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-1","tag-1105","tag-chemistry","tag-metals-minerals-ores-properties-uses","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Which of the following statements are true for the reaction of Fe\u2082O\u2083 w<\/title>\n<meta name=\"description\" content=\"The reaction of Fe\u2082O\u2083 with aluminium is a highly exothermic displacement reaction where aluminium, being more reactive than iron, reduces iron(III) oxide to molten iron. The balanced chemical equation is 2Al + Fe\u2082O\u2083 \u2192 Al\u2082O\u2083 + 2Fe + Heat. - Statement 1 is correct: This reaction is famously known as the thermite reaction. - Statement 2 is correct: The large amount of heat produced in the thermite reaction results in molten iron, which is used for welding broken railway tracks or cracked machine parts (thermite welding). - Statement 3 is incorrect: Aluminium acts as a reducing agent because it removes oxygen from Fe\u2082O\u2083. Iron(III) oxide (Fe\u2082O\u2083) acts as the oxidizing agent. - Statement 4 is incorrect: Molten iron (Fe) is formed at the end of the reaction. Aluminium is converted to aluminium oxide (Al\u2082O\u2083), not molten aluminium metal.\" \/>\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-of-the-following-statements-are-true-for-the-reaction-of-fe\u2082o\u2083-w\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which of the following statements are true for the reaction of Fe\u2082O\u2083 w\" \/>\n<meta property=\"og:description\" content=\"The reaction of Fe\u2082O\u2083 with aluminium is a highly exothermic displacement reaction where aluminium, being more reactive than iron, reduces iron(III) oxide to molten iron. The balanced chemical equation is 2Al + Fe\u2082O\u2083 \u2192 Al\u2082O\u2083 + 2Fe + Heat. - Statement 1 is correct: This reaction is famously known as the thermite reaction. - Statement 2 is correct: The large amount of heat produced in the thermite reaction results in molten iron, which is used for welding broken railway tracks or cracked machine parts (thermite welding). - Statement 3 is incorrect: Aluminium acts as a reducing agent because it removes oxygen from Fe\u2082O\u2083. Iron(III) oxide (Fe\u2082O\u2083) acts as the oxidizing agent. - Statement 4 is incorrect: Molten iron (Fe) is formed at the end of the reaction. Aluminium is converted to aluminium oxide (Al\u2082O\u2083), not molten aluminium metal.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-true-for-the-reaction-of-fe\u2082o\u2083-w\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T03:15:06+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 of the following statements are true for the reaction of Fe\u2082O\u2083 w","description":"The reaction of Fe\u2082O\u2083 with aluminium is a highly exothermic displacement reaction where aluminium, being more reactive than iron, reduces iron(III) oxide to molten iron. The balanced chemical equation is 2Al + Fe\u2082O\u2083 \u2192 Al\u2082O\u2083 + 2Fe + Heat. - Statement 1 is correct: This reaction is famously known as the thermite reaction. - Statement 2 is correct: The large amount of heat produced in the thermite reaction results in molten iron, which is used for welding broken railway tracks or cracked machine parts (thermite welding). - Statement 3 is incorrect: Aluminium acts as a reducing agent because it removes oxygen from Fe\u2082O\u2083. Iron(III) oxide (Fe\u2082O\u2083) acts as the oxidizing agent. - Statement 4 is incorrect: Molten iron (Fe) is formed at the end of the reaction. Aluminium is converted to aluminium oxide (Al\u2082O\u2083), not molten aluminium metal.","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-of-the-following-statements-are-true-for-the-reaction-of-fe\u2082o\u2083-w\/","og_locale":"en_US","og_type":"article","og_title":"Which of the following statements are true for the reaction of Fe\u2082O\u2083 w","og_description":"The reaction of Fe\u2082O\u2083 with aluminium is a highly exothermic displacement reaction where aluminium, being more reactive than iron, reduces iron(III) oxide to molten iron. The balanced chemical equation is 2Al + Fe\u2082O\u2083 \u2192 Al\u2082O\u2083 + 2Fe + Heat. - Statement 1 is correct: This reaction is famously known as the thermite reaction. - Statement 2 is correct: The large amount of heat produced in the thermite reaction results in molten iron, which is used for welding broken railway tracks or cracked machine parts (thermite welding). - Statement 3 is incorrect: Aluminium acts as a reducing agent because it removes oxygen from Fe\u2082O\u2083. Iron(III) oxide (Fe\u2082O\u2083) acts as the oxidizing agent. - Statement 4 is incorrect: Molten iron (Fe) is formed at the end of the reaction. Aluminium is converted to aluminium oxide (Al\u2082O\u2083), not molten aluminium metal.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-true-for-the-reaction-of-fe\u2082o\u2083-w\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T03:15:06+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-of-the-following-statements-are-true-for-the-reaction-of-fe%e2%82%82o%e2%82%83-w\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-true-for-the-reaction-of-fe%e2%82%82o%e2%82%83-w\/","name":"Which of the following statements are true for the reaction of Fe\u2082O\u2083 w","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T03:15:06+00:00","dateModified":"2025-06-01T03:15:06+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The reaction of Fe\u2082O\u2083 with aluminium is a highly exothermic displacement reaction where aluminium, being more reactive than iron, reduces iron(III) oxide to molten iron. The balanced chemical equation is 2Al + Fe\u2082O\u2083 \u2192 Al\u2082O\u2083 + 2Fe + Heat. - Statement 1 is correct: This reaction is famously known as the thermite reaction. - Statement 2 is correct: The large amount of heat produced in the thermite reaction results in molten iron, which is used for welding broken railway tracks or cracked machine parts (thermite welding). - Statement 3 is incorrect: Aluminium acts as a reducing agent because it removes oxygen from Fe\u2082O\u2083. Iron(III) oxide (Fe\u2082O\u2083) acts as the oxidizing agent. - Statement 4 is incorrect: Molten iron (Fe) is formed at the end of the reaction. Aluminium is converted to aluminium oxide (Al\u2082O\u2083), not molten aluminium metal.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-true-for-the-reaction-of-fe%e2%82%82o%e2%82%83-w\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-true-for-the-reaction-of-fe%e2%82%82o%e2%82%83-w\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-true-for-the-reaction-of-fe%e2%82%82o%e2%82%83-w\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC CDS-1","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-cds-1\/"},{"@type":"ListItem","position":3,"name":"Which of the following statements are true for the reaction of Fe\u2082O\u2083 w"}]},{"@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\/85385","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=85385"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/85385\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=85385"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=85385"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=85385"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}