{"id":87511,"date":"2025-06-01T06:45:45","date_gmt":"2025-06-01T06:45:45","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=87511"},"modified":"2025-06-01T06:45:45","modified_gmt":"2025-06-01T06:45:45","slug":"why-is-it-difficult-to-measure-the-coefficient-of-expansion-of-a-liqui","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/why-is-it-difficult-to-measure-the-coefficient-of-expansion-of-a-liqui\/","title":{"rendered":"Why is it difficult to measure the coefficient of expansion of a liqui"},"content":{"rendered":"

Why is it difficult to measure the coefficient of expansion of a liquid than solid ?<\/p>\n

[amp_mcq option1=”Liquids tend to evaporate at all temperatures” option2=”Liquids conduct more heat” option3=”Liquids expand too much when heated” option4=”Their containers also expand when heated” correct=”option4″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-1 – 2017<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe question asks why it is difficult to measure the coefficient of expansion of a liquid compared to a solid.
\n<\/section>\n
\nWhen measuring the volume expansion of a liquid, the liquid must be held in a container. When the liquid is heated, the container also gets heated and expands. The observed increase in the volume of the liquid (apparent expansion) is the difference between the actual increase in volume of the liquid (real expansion) and the increase in volume of the container.
\n$V_{observed} = V_{real, liquid} – V_{expansion, container}$
\nTo find the real coefficient of volume expansion of the liquid, one needs to account for the expansion of the container, which itself has a coefficient of volume expansion (or linear expansion, from which volume expansion can be derived). This adds complexity to the measurement process compared to measuring the expansion of a solid rod or block, where the change in length or volume is directly measured.
\nOption D correctly identifies this key difficulty: the container’s expansion must be factored in.
\n<\/section>\n
\nLiquids have two coefficients of volume expansion: the coefficient of apparent expansion and the coefficient of real expansion. The coefficient of real expansion of the liquid is equal to the coefficient of apparent expansion of the liquid plus the coefficient of volume expansion of the container material. While liquids generally expand more than solids, the main difficulty in measurement lies in the experimental setup requiring a container that also expands. Evaporation (option A) can also make measurements difficult, especially over long periods or at higher temperatures, but the fundamental challenge inherent to volume expansion measurement of liquids involves the container.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Why is it difficult to measure the coefficient of expansion of a liquid than solid ? [amp_mcq option1=”Liquids tend to evaporate at all temperatures” option2=”Liquids conduct more heat” option3=”Liquids expand too much when heated” option4=”Their containers also expand when heated” correct=”option4″] This question was previously asked in UPSC NDA-1 – 2017 Download PDFAttempt Online The … <\/p>\n

Detailed SolutionWhy is it difficult to measure the coefficient of expansion of a liqui<\/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":[1101,1130,1128],"class_list":["post-87511","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-1","tag-1101","tag-heat-and-thermodynamics","tag-physics","no-featured-image-padding"],"yoast_head":"\nWhy is it difficult to measure the coefficient of expansion of a liqui<\/title>\n<meta name=\"description\" content=\"The question asks why it is difficult to measure the coefficient of expansion of a liquid compared to a solid. When measuring the volume expansion of a liquid, the liquid must be held in a container. When the liquid is heated, the container also gets heated and expands. The observed increase in the volume of the liquid (apparent expansion) is the difference between the actual increase in volume of the liquid (real expansion) and the increase in volume of the container. $V_{observed} = V_{real, liquid} - V_{expansion, container}$ To find the real coefficient of volume expansion of the liquid, one needs to account for the expansion of the container, which itself has a coefficient of volume expansion (or linear expansion, from which volume expansion can be derived). This adds complexity to the measurement process compared to measuring the expansion of a solid rod or block, where the change in length or volume is directly measured. Option D correctly identifies this key difficulty: the container's expansion must be factored in.\" \/>\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\/why-is-it-difficult-to-measure-the-coefficient-of-expansion-of-a-liqui\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why is it difficult to measure the coefficient of expansion of a liqui\" \/>\n<meta property=\"og:description\" content=\"The question asks why it is difficult to measure the coefficient of expansion of a liquid compared to a solid. When measuring the volume expansion of a liquid, the liquid must be held in a container. When the liquid is heated, the container also gets heated and expands. The observed increase in the volume of the liquid (apparent expansion) is the difference between the actual increase in volume of the liquid (real expansion) and the increase in volume of the container. $V_{observed} = V_{real, liquid} - V_{expansion, container}$ To find the real coefficient of volume expansion of the liquid, one needs to account for the expansion of the container, which itself has a coefficient of volume expansion (or linear expansion, from which volume expansion can be derived). This adds complexity to the measurement process compared to measuring the expansion of a solid rod or block, where the change in length or volume is directly measured. Option D correctly identifies this key difficulty: the container's expansion must be factored in.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/why-is-it-difficult-to-measure-the-coefficient-of-expansion-of-a-liqui\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T06:45:45+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":"Why is it difficult to measure the coefficient of expansion of a liqui","description":"The question asks why it is difficult to measure the coefficient of expansion of a liquid compared to a solid. When measuring the volume expansion of a liquid, the liquid must be held in a container. When the liquid is heated, the container also gets heated and expands. The observed increase in the volume of the liquid (apparent expansion) is the difference between the actual increase in volume of the liquid (real expansion) and the increase in volume of the container. $V_{observed} = V_{real, liquid} - V_{expansion, container}$ To find the real coefficient of volume expansion of the liquid, one needs to account for the expansion of the container, which itself has a coefficient of volume expansion (or linear expansion, from which volume expansion can be derived). This adds complexity to the measurement process compared to measuring the expansion of a solid rod or block, where the change in length or volume is directly measured. 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The observed increase in the volume of the liquid (apparent expansion) is the difference between the actual increase in volume of the liquid (real expansion) and the increase in volume of the container. $V_{observed} = V_{real, liquid} - V_{expansion, container}$ To find the real coefficient of volume expansion of the liquid, one needs to account for the expansion of the container, which itself has a coefficient of volume expansion (or linear expansion, from which volume expansion can be derived). This adds complexity to the measurement process compared to measuring the expansion of a solid rod or block, where the change in length or volume is directly measured. Option D correctly identifies this key difficulty: the container's expansion must be factored in.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/why-is-it-difficult-to-measure-the-coefficient-of-expansion-of-a-liqui\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T06:45:45+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\/why-is-it-difficult-to-measure-the-coefficient-of-expansion-of-a-liqui\/","url":"https:\/\/exam.pscnotes.com\/mcq\/why-is-it-difficult-to-measure-the-coefficient-of-expansion-of-a-liqui\/","name":"Why is it difficult to measure the coefficient of expansion of a liqui","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T06:45:45+00:00","dateModified":"2025-06-01T06:45:45+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The question asks why it is difficult to measure the coefficient of expansion of a liquid compared to a solid. When measuring the volume expansion of a liquid, the liquid must be held in a container. When the liquid is heated, the container also gets heated and expands. The observed increase in the volume of the liquid (apparent expansion) is the difference between the actual increase in volume of the liquid (real expansion) and the increase in volume of the container. $V_{observed} = V_{real, liquid} - V_{expansion, container}$ To find the real coefficient of volume expansion of the liquid, one needs to account for the expansion of the container, which itself has a coefficient of volume expansion (or linear expansion, from which volume expansion can be derived). This adds complexity to the measurement process compared to measuring the expansion of a solid rod or block, where the change in length or volume is directly measured. 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