{"id":21870,"date":"2024-04-15T06:12:10","date_gmt":"2024-04-15T06:12:10","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=21870"},"modified":"2024-04-15T06:12:10","modified_gmt":"2024-04-15T06:12:10","slug":"on-a-cold-day-when-the-room-temperature-is-15ac-the-metallic-cap-of-a-pen-becomes-much-colder-than-its-plastic-body-though-both-are-at-the-same-temperature-of-15ac-because-a-metals-h","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/on-a-cold-day-when-the-room-temperature-is-15ac-the-metallic-cap-of-a-pen-becomes-much-colder-than-its-plastic-body-though-both-are-at-the-same-temperature-of-15ac-because-a-metals-h\/","title":{"rendered":"On a cold day when the room temperature is 15\u00c2\u00b0C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15\u00c2\u00b0C, because : A. Metals have higher thermal capacity than plastics B. Plastics have a lower density than metals C. Metals are good conductors of heat D. Plastics have a higher thermal conductivity than metals"},"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_6a9bb0b3501c7\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    Metals have higher thermal capacity than plastics                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Plastics have a lower density than metals                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"true\">\r\n                    Metals are good conductors of heat                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    Plastics have a higher thermal conductivity than metals                <\/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>C. Metals are good conductors of heat.<\/strong><\/p>\n<p>Metals are good conductors of heat because they have free electrons that can move easily. These free electrons can carry heat away from the metal, making it feel colder to the touch. Plastics, on the other hand, do not have free electrons, so they are not as good at conducting heat. This is why the plastic body of the pen does not feel as cold as the metallic cap.<\/p>\n<p>Here is a more detailed explanation of each option:<\/p>\n<ul>\n<li><strong>A. Metals have higher thermal capacity than plastics.<\/strong> This is not true. Metals and plastics have similar thermal capacities. Thermal capacity is the amount of heat required to raise the temperature of a substance by one degree Celsius.<\/li>\n<li><strong>B. Plastics have a lower density than <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 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> metals.<\/strong> This is also not true. Metals and plastics have similar densities. Density is the mass of a substance per unit volume.<\/li>\n<li><strong>C. Metals are good conductors of heat.<\/strong> This is true. Metals are good conductors of heat because they have free electrons that can move easily. These free electrons can carry heat away from the metal, making it feel colder to the touch.<\/li>\n<li><strong>D. Plastics have a higher thermal conductivity than metals.<\/strong> This is not true. Metals have a higher thermal conductivity than plastics. Thermal conductivity is the ability of a substance to conduct heat.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Join Our Telegram Channel 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 cold day when the room temperature is 15\u00c2\u00b0C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15\u00c2\u00b0C, because : A. Metals have higher thermal capacity than plastics B. Plastics have a lower density than metals C. Metals are good conductors of heat D. 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