{"id":86169,"date":"2025-06-01T03:39:20","date_gmt":"2025-06-01T03:39:20","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=86169"},"modified":"2025-06-01T03:39:20","modified_gmt":"2025-06-01T03:39:20","slug":"what-is-the-name-of-the-process-that-converts-sulphide-ores-into-oxide","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/what-is-the-name-of-the-process-that-converts-sulphide-ores-into-oxide\/","title":{"rendered":"What is the name of the process that converts sulphide ores into oxide"},"content":{"rendered":"

What is the name of the process that converts sulphide ores into oxides by heating strongly in the presence of excess air ?<\/p>\n

[amp_mcq option1=”Calcination” option2=”Roasting” option3=”Smelting” option4=”Incineration” correct=”option2″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CDS-2 – 2021<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe process described involves heating a sulphide ore strongly in the presence of excess air to convert it into an oxide. This process is known as roasting. The general reaction is:
\n2MS(s) + 3O\u2082(g) \u2192 2MO(s) + 2SO\u2082(g) (where M is the metal)
\nFor example, roasting of zinc sulphide: 2ZnS(s) + 3O\u2082(g) \u2192 2ZnO(s) + 2SO\u2082(g).
\nCalcination involves heating a carbonate or hydroxide ore strongly in limited or no air to decompose it into an oxide.
\nSmelting is a process of using heat to extract a metal from its ore, often involving a reducing agent, and doesn’t specifically focus on converting sulphide to oxide in air.
\nIncineration is the burning of waste.
\nTherefore, roasting is the correct term for converting sulphide ores to oxides by heating in excess air.
\n<\/section>\n
\n– Roasting is specifically applied to sulphide ores.
\n– It requires heating in the presence of excess air.
\n– It converts the sulphide into a metal oxide and releases sulphur dioxide.
\n<\/section>\n
\nOxide ores are generally easier to reduce to metals than sulphide ores. Hence, sulphide ores are often first converted to oxides by roasting before reduction processes are applied. Calcination is commonly used for carbonate ores (e.g., CaCO\u2083 to CaO).
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

What is the name of the process that converts sulphide ores into oxides by heating strongly in the presence of excess air ? [amp_mcq option1=”Calcination” option2=”Roasting” option3=”Smelting” option4=”Incineration” correct=”option2″] This question was previously asked in UPSC CDS-2 – 2021 Download PDFAttempt Online The process described involves heating a sulphide ore strongly in the presence of … <\/p>\n

Detailed SolutionWhat is the name of the process that converts sulphide ores into oxide<\/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":[1088],"tags":[1110,1096,1109],"class_list":["post-86169","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-2","tag-1110","tag-chemistry","tag-metals-minerals-ores-properties-uses","no-featured-image-padding"],"yoast_head":"\nWhat is the name of the process that converts sulphide ores into oxide<\/title>\n<meta name=\"description\" content=\"The process described involves heating a sulphide ore strongly in the presence of excess air to convert it into an oxide. This process is known as roasting. The general reaction is: 2MS(s) + 3O\u2082(g) \u2192 2MO(s) + 2SO\u2082(g) (where M is the metal) For example, roasting of zinc sulphide: 2ZnS(s) + 3O\u2082(g) \u2192 2ZnO(s) + 2SO\u2082(g). Calcination involves heating a carbonate or hydroxide ore strongly in limited or no air to decompose it into an oxide. Smelting is a process of using heat to extract a metal from its ore, often involving a reducing agent, and doesn't specifically focus on converting sulphide to oxide in air. Incineration is the burning of waste. Therefore, roasting is the correct term for converting sulphide ores to oxides by heating in excess air. - Roasting is specifically applied to sulphide ores. - It requires heating in the presence of excess air. - It converts the sulphide into a metal oxide and releases sulphur dioxide.\" \/>\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\/what-is-the-name-of-the-process-that-converts-sulphide-ores-into-oxide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is the name of the process that converts sulphide ores into oxide\" \/>\n<meta property=\"og:description\" content=\"The process described involves heating a sulphide ore strongly in the presence of excess air to convert it into an oxide. This process is known as roasting. The general reaction is: 2MS(s) + 3O\u2082(g) \u2192 2MO(s) + 2SO\u2082(g) (where M is the metal) For example, roasting of zinc sulphide: 2ZnS(s) + 3O\u2082(g) \u2192 2ZnO(s) + 2SO\u2082(g). Calcination involves heating a carbonate or hydroxide ore strongly in limited or no air to decompose it into an oxide. Smelting is a process of using heat to extract a metal from its ore, often involving a reducing agent, and doesn't specifically focus on converting sulphide to oxide in air. Incineration is the burning of waste. Therefore, roasting is the correct term for converting sulphide ores to oxides by heating in excess air. - Roasting is specifically applied to sulphide ores. - It requires heating in the presence of excess air. - It converts the sulphide into a metal oxide and releases sulphur dioxide.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/what-is-the-name-of-the-process-that-converts-sulphide-ores-into-oxide\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T03:39:20+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":"What is the name of the process that converts sulphide ores into oxide","description":"The process described involves heating a sulphide ore strongly in the presence of excess air to convert it into an oxide. This process is known as roasting. The general reaction is: 2MS(s) + 3O\u2082(g) \u2192 2MO(s) + 2SO\u2082(g) (where M is the metal) For example, roasting of zinc sulphide: 2ZnS(s) + 3O\u2082(g) \u2192 2ZnO(s) + 2SO\u2082(g). Calcination involves heating a carbonate or hydroxide ore strongly in limited or no air to decompose it into an oxide. Smelting is a process of using heat to extract a metal from its ore, often involving a reducing agent, and doesn't specifically focus on converting sulphide to oxide in air. Incineration is the burning of waste. Therefore, roasting is the correct term for converting sulphide ores to oxides by heating in excess air. - Roasting is specifically applied to sulphide ores. - It requires heating in the presence of excess air. - It converts the sulphide into a metal oxide and releases sulphur dioxide.","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\/what-is-the-name-of-the-process-that-converts-sulphide-ores-into-oxide\/","og_locale":"en_US","og_type":"article","og_title":"What is the name of the process that converts sulphide ores into oxide","og_description":"The process described involves heating a sulphide ore strongly in the presence of excess air to convert it into an oxide. This process is known as roasting. The general reaction is: 2MS(s) + 3O\u2082(g) \u2192 2MO(s) + 2SO\u2082(g) (where M is the metal) For example, roasting of zinc sulphide: 2ZnS(s) + 3O\u2082(g) \u2192 2ZnO(s) + 2SO\u2082(g). Calcination involves heating a carbonate or hydroxide ore strongly in limited or no air to decompose it into an oxide. Smelting is a process of using heat to extract a metal from its ore, often involving a reducing agent, and doesn't specifically focus on converting sulphide to oxide in air. Incineration is the burning of waste. Therefore, roasting is the correct term for converting sulphide ores to oxides by heating in excess air. - Roasting is specifically applied to sulphide ores. - It requires heating in the presence of excess air. - It converts the sulphide into a metal oxide and releases sulphur dioxide.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/what-is-the-name-of-the-process-that-converts-sulphide-ores-into-oxide\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T03:39:20+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\/what-is-the-name-of-the-process-that-converts-sulphide-ores-into-oxide\/","url":"https:\/\/exam.pscnotes.com\/mcq\/what-is-the-name-of-the-process-that-converts-sulphide-ores-into-oxide\/","name":"What is the name of the process that converts sulphide ores into oxide","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T03:39:20+00:00","dateModified":"2025-06-01T03:39:20+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The process described involves heating a sulphide ore strongly in the presence of excess air to convert it into an oxide. This process is known as roasting. The general reaction is: 2MS(s) + 3O\u2082(g) \u2192 2MO(s) + 2SO\u2082(g) (where M is the metal) For example, roasting of zinc sulphide: 2ZnS(s) + 3O\u2082(g) \u2192 2ZnO(s) + 2SO\u2082(g). Calcination involves heating a carbonate or hydroxide ore strongly in limited or no air to decompose it into an oxide. Smelting is a process of using heat to extract a metal from its ore, often involving a reducing agent, and doesn't specifically focus on converting sulphide to oxide in air. Incineration is the burning of waste. Therefore, roasting is the correct term for converting sulphide ores to oxides by heating in excess air. - Roasting is specifically applied to sulphide ores. - It requires heating in the presence of excess air. - It converts the sulphide into a metal oxide and releases sulphur dioxide.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/what-is-the-name-of-the-process-that-converts-sulphide-ores-into-oxide\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/what-is-the-name-of-the-process-that-converts-sulphide-ores-into-oxide\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/what-is-the-name-of-the-process-that-converts-sulphide-ores-into-oxide\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC CDS-2","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-cds-2\/"},{"@type":"ListItem","position":3,"name":"What is the name of the process that converts sulphide ores into oxide"}]},{"@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\/86169","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=86169"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/86169\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=86169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=86169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=86169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}