{"id":89284,"date":"2025-06-01T10:00:35","date_gmt":"2025-06-01T10:00:35","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=89284"},"modified":"2025-06-01T10:00:35","modified_gmt":"2025-06-01T10:00:35","slug":"which-among-the-following-is-are-the-reasons-behind-using-mercury-in-t","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-among-the-following-is-are-the-reasons-behind-using-mercury-in-t\/","title":{"rendered":"Which among the following is\/are the reasons behind using Mercury in t"},"content":{"rendered":"<p>Which among the following is\/are the reasons behind using Mercury in thermometers ?<\/p>\n<ul>\n<li>1. Mercury does not wet the inner sides of the thermometer.<\/li>\n<li>2. It can be seen easily in a thin capillary tube of the thermometer.<\/li>\n<li>3. It is a good conductor of heat.<\/li>\n<li>4. It is non-toxic.<\/li>\n<\/ul>\n<p>Select the correct answer using the code given below :<\/p>\n<p>[amp_mcq option1=&#8221;1 only&#8221; option2=&#8221;1 and 2 only&#8221; option3=&#8221;1, 2 and 3&#8243; option4=&#8221;3 and 4&#8243; correct=&#8221;option3&#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 CAPF &#8211; 2010<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-capf-2010.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-capf-2010\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nThe reasons behind using Mercury in thermometers among the given options are that Mercury does not wet the inner sides of the thermometer, it can be seen easily in a thin capillary tube, and it is a good conductor of heat.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\nMercury possesses several properties suitable for use in thermometers: 1) It has high surface tension and does not wet (stick to) the glass tube, allowing for accurate readings of the meniscus. 2) It is opaque and reflective, making the column easily visible against the glass. 3) It is a good conductor of heat, which facilitates faster transfer of heat from the object being measured to the mercury, allowing it to quickly reach thermal equilibrium. 4) Mercury is highly toxic, which is a disadvantage, not a reason for its use.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nOther properties of mercury that make it suitable for thermometers include a relatively low freezing point (-38.83 \u00b0C) and a high boiling point (356.73 \u00b0C), giving it a wide range of use, and a uniform coefficient of thermal expansion within its liquid range. However, due to its toxicity, mercury thermometers are being increasingly replaced by alcohol-based or digital thermometers.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Which among the following is\/are the reasons behind using Mercury in thermometers ? 1. Mercury does not wet the inner sides of the thermometer. 2. It can be seen easily in a thin capillary tube of the thermometer. 3. It is a good conductor of heat. 4. It is non-toxic. Select the correct answer using &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Which among the following is\/are the reasons behind using Mercury in t\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-among-the-following-is-are-the-reasons-behind-using-mercury-in-t\/#more-89284\">Detailed Solution<span class=\"screen-reader-text\">Which among the following is\/are the reasons behind using Mercury in t<\/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":[1464,1130,1128],"class_list":["post-89284","post","type-post","status-publish","format-standard","hentry","category-upsc-capf","tag-1464","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 among the following is\/are the reasons behind using Mercury in t<\/title>\n<meta name=\"description\" content=\"The reasons behind using Mercury in thermometers among the given options are that Mercury does not wet the inner sides of the thermometer, it can be seen easily in a thin capillary tube, and it is a good conductor of heat. Mercury possesses several properties suitable for use in thermometers: 1) It has high surface tension and does not wet (stick to) the glass tube, allowing for accurate readings of the meniscus. 2) It is opaque and reflective, making the column easily visible against the glass. 3) It is a good conductor of heat, which facilitates faster transfer of heat from the object being measured to the mercury, allowing it to quickly reach thermal equilibrium. 4) Mercury is highly toxic, which is a disadvantage, not a reason for its use.\" \/>\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-among-the-following-is-are-the-reasons-behind-using-mercury-in-t\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which among the following is\/are the reasons behind using Mercury in t\" \/>\n<meta property=\"og:description\" content=\"The reasons behind using Mercury in thermometers among the given options are that Mercury does not wet the inner sides of the thermometer, it can be seen easily in a thin capillary tube, and it is a good conductor of heat. Mercury possesses several properties suitable for use in thermometers: 1) It has high surface tension and does not wet (stick to) the glass tube, allowing for accurate readings of the meniscus. 2) It is opaque and reflective, making the column easily visible against the glass. 3) It is a good conductor of heat, which facilitates faster transfer of heat from the object being measured to the mercury, allowing it to quickly reach thermal equilibrium. 4) Mercury is highly toxic, which is a disadvantage, not a reason for its use.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-among-the-following-is-are-the-reasons-behind-using-mercury-in-t\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:00:35+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":"Which among the following is\/are the reasons behind using Mercury in t","description":"The reasons behind using Mercury in thermometers among the given options are that Mercury does not wet the inner sides of the thermometer, it can be seen easily in a thin capillary tube, and it is a good conductor of heat. Mercury possesses several properties suitable for use in thermometers: 1) It has high surface tension and does not wet (stick to) the glass tube, allowing for accurate readings of the meniscus. 2) It is opaque and reflective, making the column easily visible against the glass. 3) It is a good conductor of heat, which facilitates faster transfer of heat from the object being measured to the mercury, allowing it to quickly reach thermal equilibrium. 4) Mercury is highly toxic, which is a disadvantage, not a reason for its use.","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-among-the-following-is-are-the-reasons-behind-using-mercury-in-t\/","og_locale":"en_US","og_type":"article","og_title":"Which among the following is\/are the reasons behind using Mercury in t","og_description":"The reasons behind using Mercury in thermometers among the given options are that Mercury does not wet the inner sides of the thermometer, it can be seen easily in a thin capillary tube, and it is a good conductor of heat. Mercury possesses several properties suitable for use in thermometers: 1) It has high surface tension and does not wet (stick to) the glass tube, allowing for accurate readings of the meniscus. 2) It is opaque and reflective, making the column easily visible against the glass. 3) It is a good conductor of heat, which facilitates faster transfer of heat from the object being measured to the mercury, allowing it to quickly reach thermal equilibrium. 4) Mercury is highly toxic, which is a disadvantage, not a reason for its use.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-among-the-following-is-are-the-reasons-behind-using-mercury-in-t\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T10:00:35+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\/which-among-the-following-is-are-the-reasons-behind-using-mercury-in-t\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-among-the-following-is-are-the-reasons-behind-using-mercury-in-t\/","name":"Which among the following is\/are the reasons behind using Mercury in t","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T10:00:35+00:00","dateModified":"2025-06-01T10:00:35+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The reasons behind using Mercury in thermometers among the given options are that Mercury does not wet the inner sides of the thermometer, it can be seen easily in a thin capillary tube, and it is a good conductor of heat. 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