{"id":23706,"date":"2024-04-15T06:37:10","date_gmt":"2024-04-15T06:37:10","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=23706"},"modified":"2024-04-15T06:37:10","modified_gmt":"2024-04-15T06:37:10","slug":"sodium-vapour-lamps-glow-with-yellow-colour-this-is-due-to-a-sublimation-of-sodium-to-emit-yellow-colour-b-the-emission-of-excess-energy-absorbed-by-sodium-atoms-in-the-yellow-region-of-the-spectr","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/sodium-vapour-lamps-glow-with-yellow-colour-this-is-due-to-a-sublimation-of-sodium-to-emit-yellow-colour-b-the-emission-of-excess-energy-absorbed-by-sodium-atoms-in-the-yellow-region-of-the-spectr\/","title":{"rendered":"Sodium vapour lamps glow with yellow colour. This is due to A. sublimation of sodium to emit yellow colour B. The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum C. The low ionisation energy of sodium D. Its ability to absorb all other colours except yellow"},"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_6aa5087a9940e\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    sublimation of sodium to emit yellow colour                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"true\">\r\n                    The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    The low ionisation energy of sodium                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    Its ability to absorb all other colours except yellow                <\/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: B. The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum.<\/p>\n<p>When sodium atoms are heated, they absorb energy from the heat source. This energy causes the electrons in the sodium atoms to move to higher energy levels. When the electrons fall back down to their original energy levels, they emit light. The light that is emitted is in the yellow region of the spectrum, which is why sodium vapor lamps glow with yellow light.<\/p>\n<p>Option A is incorrect because sublimation is the process of a solid turning directly into a gas without passing through a liquid phase. This is not what happens in sodium vapor lamps.<\/p>\n<p>Option C is incorrect because the low ionization energy of sodium does not cause the sodium atoms to emit light. The low ionization energy of sodium does make it <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                   <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>  <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 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> easier for the electrons in the sodium atoms to be excited to higher energy levels, but it is the emission of excess energy that causes the sodium atoms to emit light.<\/p>\n<p>Option D is incorrect because sodium vapor lamps do not absorb all other colors except yellow. They absorb all colors of light, but they only emit light in the yellow region of the spectrum.<\/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":[19],"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>Sodium vapour lamps glow with yellow colour. This is due to A. sublimation of sodium to emit yellow colour B. The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum C. The low ionisation energy of sodium D. 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