{"id":90592,"date":"2025-06-01T10:31:38","date_gmt":"2025-06-01T10:31:38","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=90592"},"modified":"2025-06-01T10:31:38","modified_gmt":"2025-06-01T10:31:38","slug":"manganese-is-extracted-by-heating-manganese-dioxide-with-aluminium-pow","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/manganese-is-extracted-by-heating-manganese-dioxide-with-aluminium-pow\/","title":{"rendered":"Manganese is extracted by heating manganese dioxide with aluminium pow"},"content":{"rendered":"

Manganese is extracted by heating manganese dioxide with aluminium powder. Which one of the following statements with regard to the reaction is correct?<\/p>\n

[amp_mcq option1=”The reaction is exothermic.” option2=”The reaction is endothermic.” option3=”Manganese is produced as a solid.” option4=”Manganese is more reactive than aluminium.” correct=”option1″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CAPF – 2021<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe reaction between manganese dioxide and aluminium powder is a type of thermite reaction. Thermite reactions are highly exothermic, releasing a significant amount of heat.
\n<\/section>\n
\nThermite reactions involve the reduction of a metal oxide by a more reactive metal (typically aluminium). The general form is Metal Oxide A + Metal B \u2192 Metal A + Oxide of Metal B, where Metal B is more reactive than Metal A. These reactions are characterized by their high exothermicity, often producing molten metal.
\n<\/section>\n
\nIn this specific reaction, Al is more reactive than Mn, displacing it from MnO2. The equation is 3MnO\u2082 + 4Al \u2192 2Al\u2082O\u2083 + 3Mn + Heat. While Manganese is indeed produced as a solid at room temperature, during the reaction itself, the high temperature can cause the product metal (depending on its melting point and the reaction’s heat) to be in a molten state. However, the statement that the reaction is exothermic is a fundamental property of this reaction type.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Manganese is extracted by heating manganese dioxide with aluminium powder. Which one of the following statements with regard to the reaction is correct? [amp_mcq option1=”The reaction is exothermic.” option2=”The reaction is endothermic.” option3=”Manganese is produced as a solid.” option4=”Manganese is more reactive than aluminium.” correct=”option1″] This question was previously asked in UPSC CAPF – 2021 … <\/p>\n

Detailed SolutionManganese is extracted by heating manganese dioxide with aluminium pow<\/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":[1110,1096,1109],"class_list":["post-90592","post","type-post","status-publish","format-standard","hentry","category-upsc-capf","tag-1110","tag-chemistry","tag-metals-minerals-ores-properties-uses","no-featured-image-padding"],"yoast_head":"\nManganese is extracted by heating manganese dioxide with aluminium pow<\/title>\n<meta name=\"description\" content=\"The reaction between manganese dioxide and aluminium powder is a type of thermite reaction. Thermite reactions are highly exothermic, releasing a significant amount of heat. Thermite reactions involve the reduction of a metal oxide by a more reactive metal (typically aluminium). The general form is Metal Oxide A + Metal B \u2192 Metal A + Oxide of Metal B, where Metal B is more reactive than Metal A. These reactions are characterized by their high exothermicity, often producing molten 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\/manganese-is-extracted-by-heating-manganese-dioxide-with-aluminium-pow\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Manganese is extracted by heating manganese dioxide with aluminium pow\" \/>\n<meta property=\"og:description\" content=\"The reaction between manganese dioxide and aluminium powder is a type of thermite reaction. Thermite reactions are highly exothermic, releasing a significant amount of heat. Thermite reactions involve the reduction of a metal oxide by a more reactive metal (typically aluminium). The general form is Metal Oxide A + Metal B \u2192 Metal A + Oxide of Metal B, where Metal B is more reactive than Metal A. These reactions are characterized by their high exothermicity, often producing molten metal.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/manganese-is-extracted-by-heating-manganese-dioxide-with-aluminium-pow\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:31:38+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":"Manganese is extracted by heating manganese dioxide with aluminium pow","description":"The reaction between manganese dioxide and aluminium powder is a type of thermite reaction. 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