{"id":86436,"date":"2025-06-01T03:46:56","date_gmt":"2025-06-01T03:46:56","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=86436"},"modified":"2025-06-01T03:46:56","modified_gmt":"2025-06-01T03:46:56","slug":"in-which-one-of-the-following-cases-do-both-physical-and-chemical-chan","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/in-which-one-of-the-following-cases-do-both-physical-and-chemical-chan\/","title":{"rendered":"In which one of the following cases do both physical and chemical chan"},"content":{"rendered":"

In which one of the following cases do both physical and chemical changes take place?<\/p>\n

[amp_mcq option1=”Burning of candle” option2=”Freezing of water” option3=”Cooking of food” option4=”Rusting of iron” correct=”option1″]<\/p>\n

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This question was previously asked in<\/div>\n
UPSC CDS-2 – 2023<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
A physical change involves a change in the form or appearance of a substance but not its chemical composition (e.g., changes of state). A chemical change involves a change in the chemical composition of a substance, resulting in the formation of new substances (e.g., combustion, rusting).<\/section>\n
In the burning of a candle, the wax melts (physical change) and turns into liquid. This liquid wax is then drawn up the wick, vaporizes, and reacts with oxygen in the air (combustion), producing carbon dioxide, water vapor, heat, and light (chemical change). Thus, both physical (melting\/vaporization of wax) and chemical (combustion of wax vapor) changes occur simultaneously as the candle burns.<\/section>\n
Freezing of water is purely a physical change (liquid to solid). Rusting of iron is a chemical change (iron reacts with oxygen and water). Cooking of food involves primarily chemical changes in the food components (e.g., protein denaturation, starch gelatinization), although physical processes like boiling water might be involved as a heating method.<\/section>\n","protected":false},"excerpt":{"rendered":"

In which one of the following cases do both physical and chemical changes take place? [amp_mcq option1=”Burning of candle” option2=”Freezing of water” option3=”Cooking of food” option4=”Rusting of iron” correct=”option1″] This question was previously asked in UPSC CDS-2 – 2023 Download PDFAttempt Online A physical change involves a change in the form or appearance of a … <\/p>\n

Detailed SolutionIn which one of the following cases do both physical and chemical chan<\/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":[1105,1096,1155],"class_list":["post-86436","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-2","tag-1105","tag-chemistry","tag-physical-and-chemical-changes-solution","no-featured-image-padding"],"yoast_head":"\nIn which one of the following cases do both physical and chemical chan<\/title>\n<meta name=\"description\" content=\"A physical change involves a change in the form or appearance of a substance but not its chemical composition (e.g., changes of state). A chemical change involves a change in the chemical composition of a substance, resulting in the formation of new substances (e.g., combustion, rusting). In the burning of a candle, the wax melts (physical change) and turns into liquid. This liquid wax is then drawn up the wick, vaporizes, and reacts with oxygen in the air (combustion), producing carbon dioxide, water vapor, heat, and light (chemical change). Thus, both physical (melting\/vaporization of wax) and chemical (combustion of wax vapor) changes occur simultaneously as the candle burns.\" \/>\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\/in-which-one-of-the-following-cases-do-both-physical-and-chemical-chan\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"In which one of the following cases do both physical and chemical chan\" \/>\n<meta property=\"og:description\" content=\"A physical change involves a change in the form or appearance of a substance but not its chemical composition (e.g., changes of state). A chemical change involves a change in the chemical composition of a substance, resulting in the formation of new substances (e.g., combustion, rusting). In the burning of a candle, the wax melts (physical change) and turns into liquid. This liquid wax is then drawn up the wick, vaporizes, and reacts with oxygen in the air (combustion), producing carbon dioxide, water vapor, heat, and light (chemical change). Thus, both physical (melting\/vaporization of wax) and chemical (combustion of wax vapor) changes occur simultaneously as the candle burns.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/in-which-one-of-the-following-cases-do-both-physical-and-chemical-chan\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T03:46:56+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":"In which one of the following cases do both physical and chemical chan","description":"A physical change involves a change in the form or appearance of a substance but not its chemical composition (e.g., changes of state). A chemical change involves a change in the chemical composition of a substance, resulting in the formation of new substances (e.g., combustion, rusting). In the burning of a candle, the wax melts (physical change) and turns into liquid. This liquid wax is then drawn up the wick, vaporizes, and reacts with oxygen in the air (combustion), producing carbon dioxide, water vapor, heat, and light (chemical change). Thus, both physical (melting\/vaporization of wax) and chemical (combustion of wax vapor) changes occur simultaneously as the candle burns.","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\/in-which-one-of-the-following-cases-do-both-physical-and-chemical-chan\/","og_locale":"en_US","og_type":"article","og_title":"In which one of the following cases do both physical and chemical chan","og_description":"A physical change involves a change in the form or appearance of a substance but not its chemical composition (e.g., changes of state). A chemical change involves a change in the chemical composition of a substance, resulting in the formation of new substances (e.g., combustion, rusting). In the burning of a candle, the wax melts (physical change) and turns into liquid. 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Thus, both physical (melting\/vaporization of wax) and chemical (combustion of wax vapor) changes occur simultaneously as the candle burns.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/in-which-one-of-the-following-cases-do-both-physical-and-chemical-chan\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T03:46:56+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\/in-which-one-of-the-following-cases-do-both-physical-and-chemical-chan\/","url":"https:\/\/exam.pscnotes.com\/mcq\/in-which-one-of-the-following-cases-do-both-physical-and-chemical-chan\/","name":"In which one of the following cases do both physical and chemical chan","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T03:46:56+00:00","dateModified":"2025-06-01T03:46:56+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"A physical change involves a change in the form or appearance of a substance but not its chemical composition (e.g., changes of state). A chemical change involves a change in the chemical composition of a substance, resulting in the formation of new substances (e.g., combustion, rusting). In the burning of a candle, the wax melts (physical change) and turns into liquid. This liquid wax is then drawn up the wick, vaporizes, and reacts with oxygen in the air (combustion), producing carbon dioxide, water vapor, heat, and light (chemical change). Thus, both physical (melting\/vaporization of wax) and chemical (combustion of wax vapor) changes occur simultaneously as the candle burns.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/in-which-one-of-the-following-cases-do-both-physical-and-chemical-chan\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/in-which-one-of-the-following-cases-do-both-physical-and-chemical-chan\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/in-which-one-of-the-following-cases-do-both-physical-and-chemical-chan\/#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":"In which one of the following cases do both physical and chemical chan"}]},{"@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\/86436","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=86436"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/86436\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=86436"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=86436"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=86436"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}