{"id":21744,"date":"2024-04-15T06:10:28","date_gmt":"2024-04-15T06:10:28","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=21744"},"modified":"2024-04-15T06:10:28","modified_gmt":"2024-04-15T06:10:28","slug":"on-a-clean-glass-plate-a-drop-of-water-spreads-to-form-a-thin-layer-whereas-a-drop-of-mercury-remains-almost-spherical-because-a-mercury-is-a-metal-b-density-of-mercury-is-greater-than-that-of-wat","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/on-a-clean-glass-plate-a-drop-of-water-spreads-to-form-a-thin-layer-whereas-a-drop-of-mercury-remains-almost-spherical-because-a-mercury-is-a-metal-b-density-of-mercury-is-greater-than-that-of-wat\/","title":{"rendered":"On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because: A. mercury is a metal. B. density of mercury is greater than that of water. C. cohesion of mercury is greater than its adhesion with glass. D. cohesion of water is greater than its adhesion with glass."},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6a996c53a99f9\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    mercury is a metal.                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    density of mercury is greater than that of water.                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"true\">\r\n                    cohesion of mercury is greater than its adhesion with glass.                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    cohesion of water is greater than its adhesion with glass.                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is: <strong>Cohesion of water is greater than its adhesion with glass.<\/strong><\/p>\n<p>Water molecules are polar, <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 <div 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<\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> which means they have a positive end and a negative end. This polarity allows water molecules to form hydrogen bonds with each other. Hydrogen bonds are weak bonds, but they are very numerous, and they give water its unique properties. One of these properties is surface tension, which is the tendency of water to minimize its surface area. This is why water forms droplets, and why it beads up on a waxy surface.<\/p>\n<p>Mercury is a metal, and metals are not polar. This means that mercury molecules do not form hydrogen bonds with each other. As a result, mercury does not have surface tension, and it spreads out to form a thin layer on a glass surface.<\/p>\n<p>Option A is incorrect because mercury is a metal, but this does not explain why it does not spread out on a glass surface.<\/p>\n<p>Option B is incorrect because the density of mercury is greater than that of water, but this does not explain why mercury does not spread out on a glass surface.<\/p>\n<p>Option C is incorrect because the cohesion of mercury is greater than its adhesion with glass, but this does not explain why mercury does not spread out on a glass surface.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[],"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>On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because: A. mercury is a metal. B. density of mercury is greater than that of water. C. cohesion of mercury is greater than its adhesion with glass. D. cohesion of water is greater than its adhesion with glass.<\/title>\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\/on-a-clean-glass-plate-a-drop-of-water-spreads-to-form-a-thin-layer-whereas-a-drop-of-mercury-remains-almost-spherical-because-a-mercury-is-a-metal-b-density-of-mercury-is-greater-than-that-of-wat\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because: A. mercury is a metal. B. density of mercury is greater than that of water. C. cohesion of mercury is greater than its adhesion with glass. D. cohesion of water is greater than its adhesion with glass.\" \/>\n<meta property=\"og:description\" content=\"Subscribe on YouTube\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/on-a-clean-glass-plate-a-drop-of-water-spreads-to-form-a-thin-layer-whereas-a-drop-of-mercury-remains-almost-spherical-because-a-mercury-is-a-metal-b-density-of-mercury-is-greater-than-that-of-wat\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-15T06:10:28+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":"On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because: A. mercury is a metal. B. density of mercury is greater than that of water. C. cohesion of mercury is greater than its adhesion with glass. D. cohesion of water is greater than its adhesion with glass.","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\/on-a-clean-glass-plate-a-drop-of-water-spreads-to-form-a-thin-layer-whereas-a-drop-of-mercury-remains-almost-spherical-because-a-mercury-is-a-metal-b-density-of-mercury-is-greater-than-that-of-wat\/","og_locale":"en_US","og_type":"article","og_title":"On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because: A. mercury is a metal. B. density of mercury is greater than that of water. C. cohesion of mercury is greater than its adhesion with glass. D. cohesion of water is greater than its adhesion with glass.","og_description":"Subscribe on YouTube","og_url":"https:\/\/exam.pscnotes.com\/mcq\/on-a-clean-glass-plate-a-drop-of-water-spreads-to-form-a-thin-layer-whereas-a-drop-of-mercury-remains-almost-spherical-because-a-mercury-is-a-metal-b-density-of-mercury-is-greater-than-that-of-wat\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2024-04-15T06:10:28+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\/on-a-clean-glass-plate-a-drop-of-water-spreads-to-form-a-thin-layer-whereas-a-drop-of-mercury-remains-almost-spherical-because-a-mercury-is-a-metal-b-density-of-mercury-is-greater-than-that-of-wat\/","url":"https:\/\/exam.pscnotes.com\/mcq\/on-a-clean-glass-plate-a-drop-of-water-spreads-to-form-a-thin-layer-whereas-a-drop-of-mercury-remains-almost-spherical-because-a-mercury-is-a-metal-b-density-of-mercury-is-greater-than-that-of-wat\/","name":"On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because: A. mercury is a metal. 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