{"id":87560,"date":"2025-06-01T06:47:43","date_gmt":"2025-06-01T06:47:43","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=87560"},"modified":"2025-06-01T06:47:43","modified_gmt":"2025-06-01T06:47:43","slug":"which-of-the-following-statements-about-latent-heat-for-a-given-substa","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-latent-heat-for-a-given-substa\/","title":{"rendered":"Which of the following statements about latent heat for a given substa"},"content":{"rendered":"<p>Which of the following statements about latent heat for a given substance is\/are correct ?<\/p>\n<ul>\n<li>1. It is fixed at a given temperature.<\/li>\n<li>2. It depends upon the temperature and volume.<\/li>\n<li>3. It is independent of temperature and volume.<\/li>\n<li>4. It depends on the temperature but independent of volume.<\/li>\n<\/ul>\n<p>Select the correct answer using the code given below :<\/p>\n<p>[amp_mcq option1=&#8221;2&#8243; option2=&#8221;1 and 3&#8243; option3=&#8221;4 only&#8221; option4=&#8221;1 and 4&#8243; correct=&#8221;option4&#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 NDA-1 &#8211; 2018<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-nda-1-2018.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-nda-1-2018\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nStatement 1 is correct: For a specific substance at a given pressure, the latent heat associated with a phase transition (like melting or boiling) is fixed at the transition temperature. Statement 4 is also considered correct in the context that the value of latent heat is characteristic of the specific transition temperature, though the phrasing &#8220;depends on the temperature&#8221; can be ambiguous.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\n&#8211; Latent heat is the energy absorbed or released during a phase change at constant temperature and pressure.<br \/>\n&#8211; Statement 1 accurately reflects that for a specific phase transition at standard conditions, the latent heat value is constant at the transition temperature.<br \/>\n&#8211; While the phase change occurs *at* a constant temperature, the *value* of the latent heat can technically vary with the pressure, which in turn affects the transition temperature. Statement 4 might be interpreting &#8220;depends on the temperature&#8221; as being specific to the transition temperature value, and &#8220;independent of volume&#8221; in the sense that the volume of the substance isn&#8217;t a variable determining the latent heat value itself, unlike say, specific heat capacity which can be defined at constant volume.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nStatement 2 is incorrect as volume is not a primary variable defining latent heat. Statement 3 is incorrect as latent heat is fundamentally linked to the transition temperature. Given the options, 1 and 4 are the most plausible correct statements, despite the awkward phrasing of 4. This suggests that the question setter considered both 1 and 4 as correct representations, with 4 perhaps indicating dependence on the *specific transition temperature*.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Which of the following statements about latent heat for a given substance is\/are correct ? 1. It is fixed at a given temperature. 2. It depends upon the temperature and volume. 3. It is independent of temperature and volume. 4. It depends on the temperature but independent of volume. Select the correct answer using the &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Which of the following statements about latent heat for a given substa\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-latent-heat-for-a-given-substa\/#more-87560\">Detailed Solution<span class=\"screen-reader-text\">Which of the following statements about latent heat for a given substa<\/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":[1093],"tags":[1114,1130,1128],"class_list":["post-87560","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-1","tag-1114","tag-heat-and-thermodynamics","tag-physics","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 about latent heat for a given substa<\/title>\n<meta name=\"description\" content=\"Statement 1 is correct: For a specific substance at a given pressure, the latent heat associated with a phase transition (like melting or boiling) is fixed at the transition temperature. Statement 4 is also considered correct in the context that the value of latent heat is characteristic of the specific transition temperature, though the phrasing &quot;depends on the temperature&quot; can be ambiguous. - Latent heat is the energy absorbed or released during a phase change at constant temperature and pressure. - Statement 1 accurately reflects that for a specific phase transition at standard conditions, the latent heat value is constant at the transition temperature. - While the phase change occurs *at* a constant temperature, the *value* of the latent heat can technically vary with the pressure, which in turn affects the transition temperature. Statement 4 might be interpreting &quot;depends on the temperature&quot; as being specific to the transition temperature value, and &quot;independent of volume&quot; in the sense that the volume of the substance isn&#039;t a variable determining the latent heat value itself, unlike say, specific heat capacity which can be defined at constant volume.\" \/>\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-about-latent-heat-for-a-given-substa\/\" \/>\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 about latent heat for a given substa\" \/>\n<meta property=\"og:description\" content=\"Statement 1 is correct: For a specific substance at a given pressure, the latent heat associated with a phase transition (like melting or boiling) is fixed at the transition temperature. Statement 4 is also considered correct in the context that the value of latent heat is characteristic of the specific transition temperature, though the phrasing &quot;depends on the temperature&quot; can be ambiguous. - Latent heat is the energy absorbed or released during a phase change at constant temperature and pressure. - Statement 1 accurately reflects that for a specific phase transition at standard conditions, the latent heat value is constant at the transition temperature. - While the phase change occurs *at* a constant temperature, the *value* of the latent heat can technically vary with the pressure, which in turn affects the transition temperature. Statement 4 might be interpreting &quot;depends on the temperature&quot; as being specific to the transition temperature value, and &quot;independent of volume&quot; in the sense that the volume of the substance isn&#039;t a variable determining the latent heat value itself, unlike say, specific heat capacity which can be defined at constant volume.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-latent-heat-for-a-given-substa\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T06:47:43+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=\"2 minutes\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Which of the following statements about latent heat for a given substa","description":"Statement 1 is correct: For a specific substance at a given pressure, the latent heat associated with a phase transition (like melting or boiling) is fixed at the transition temperature. Statement 4 is also considered correct in the context that the value of latent heat is characteristic of the specific transition temperature, though the phrasing \"depends on the temperature\" can be ambiguous. - Latent heat is the energy absorbed or released during a phase change at constant temperature and pressure. - Statement 1 accurately reflects that for a specific phase transition at standard conditions, the latent heat value is constant at the transition temperature. - While the phase change occurs *at* a constant temperature, the *value* of the latent heat can technically vary with the pressure, which in turn affects the transition temperature. Statement 4 might be interpreting \"depends on the temperature\" as being specific to the transition temperature value, and \"independent of volume\" in the sense that the volume of the substance isn't a variable determining the latent heat value itself, unlike say, specific heat capacity which can be defined at constant volume.","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-about-latent-heat-for-a-given-substa\/","og_locale":"en_US","og_type":"article","og_title":"Which of the following statements about latent heat for a given substa","og_description":"Statement 1 is correct: For a specific substance at a given pressure, the latent heat associated with a phase transition (like melting or boiling) is fixed at the transition temperature. Statement 4 is also considered correct in the context that the value of latent heat is characteristic of the specific transition temperature, though the phrasing \"depends on the temperature\" can be ambiguous. - Latent heat is the energy absorbed or released during a phase change at constant temperature and pressure. - Statement 1 accurately reflects that for a specific phase transition at standard conditions, the latent heat value is constant at the transition temperature. - While the phase change occurs *at* a constant temperature, the *value* of the latent heat can technically vary with the pressure, which in turn affects the transition temperature. Statement 4 might be interpreting \"depends on the temperature\" as being specific to the transition temperature value, and \"independent of volume\" in the sense that the volume of the substance isn't a variable determining the latent heat value itself, unlike say, specific heat capacity which can be defined at constant volume.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-latent-heat-for-a-given-substa\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T06:47:43+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-latent-heat-for-a-given-substa\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-latent-heat-for-a-given-substa\/","name":"Which of the following statements about latent heat for a given substa","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T06:47:43+00:00","dateModified":"2025-06-01T06:47:43+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Statement 1 is correct: For a specific substance at a given pressure, the latent heat associated with a phase transition (like melting or boiling) is fixed at the transition temperature. Statement 4 is also considered correct in the context that the value of latent heat is characteristic of the specific transition temperature, though the phrasing \"depends on the temperature\" can be ambiguous. - Latent heat is the energy absorbed or released during a phase change at constant temperature and pressure. - Statement 1 accurately reflects that for a specific phase transition at standard conditions, the latent heat value is constant at the transition temperature. - While the phase change occurs *at* a constant temperature, the *value* of the latent heat can technically vary with the pressure, which in turn affects the transition temperature. Statement 4 might be interpreting \"depends on the temperature\" as being specific to the transition temperature value, and \"independent of volume\" in the sense that the volume of the substance isn't a variable determining the latent heat value itself, unlike say, specific heat capacity which can be defined at constant volume.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-latent-heat-for-a-given-substa\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-latent-heat-for-a-given-substa\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-latent-heat-for-a-given-substa\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC NDA-1","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-nda-1\/"},{"@type":"ListItem","position":3,"name":"Which of the following statements about latent heat for a given substa"}]},{"@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\/87560","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=87560"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/87560\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=87560"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=87560"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=87560"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}