{"id":7123,"date":"2024-04-15T02:39:50","date_gmt":"2024-04-15T02:39:50","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=7123"},"modified":"2024-04-15T02:39:50","modified_gmt":"2024-04-15T02:39:50","slug":"chlorine-demand-of-water-is-equal-to-a-applied-chlorine-b-residual-chlorine-c-sum-of-applied-and-residual-chlorine-d-difference-of-applied-and-residual-chlorine","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/chlorine-demand-of-water-is-equal-to-a-applied-chlorine-b-residual-chlorine-c-sum-of-applied-and-residual-chlorine-d-difference-of-applied-and-residual-chlorine\/","title":{"rendered":"Chlorine demand of water is equal to A. Applied chlorine B. Residual chlorine C. Sum of applied and residual chlorine D. Difference of applied and residual chlorine"},"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_6a9817d9928f1\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    Applied chlorine                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Residual chlorine                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"true\">\r\n                    Sum of applied and residual chlorine                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    Difference of applied and residual chlorine                <\/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. Sum of applied and residual chlorine<\/strong>.<\/p>\n<p>Chlorine demand is the amount of chlorine that must be added to water to achieve a desired level of disinfection. The applied chlorine is the amount of chlorine that is added to the water, and the residual chlorine is the amount of chlorine that remains in the water after a period of time. The <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 <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> 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> sum of the applied and residual chlorine is the total chlorine demand of the water.<\/p>\n<p>Option A, applied chlorine, is the amount of chlorine that is added to the water. This is not the same as the chlorine demand, because some of the applied chlorine may react with other substances in the water and be removed.<\/p>\n<p>Option B, residual chlorine, is the amount of chlorine that remains in the water after a period of time. This is not the same as the chlorine demand, because some of the applied chlorine may react with other substances in the water and be removed.<\/p>\n<p>Option C, sum of applied and residual chlorine, is the total amount of chlorine that is added to the water and that remains in the water after a period of time. This is the same as the chlorine demand.<\/p>\n<p>Option D, difference of applied and residual chlorine, is not the same as the chlorine demand. This is because some of the applied chlorine may react with other substances in the water and be removed.<\/p>\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":[647],"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>Chlorine demand of water is equal to A. Applied chlorine B. Residual chlorine C. Sum of applied and residual chlorine D. Difference of applied and residual chlorine<\/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\/chlorine-demand-of-water-is-equal-to-a-applied-chlorine-b-residual-chlorine-c-sum-of-applied-and-residual-chlorine-d-difference-of-applied-and-residual-chlorine\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Chlorine demand of water is equal to A. Applied chlorine B. Residual chlorine C. Sum of applied and residual chlorine D. Difference of applied and residual chlorine\" \/>\n<meta property=\"og:description\" content=\"Join Our Telegram Channel Subscribe on YouTube\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/chlorine-demand-of-water-is-equal-to-a-applied-chlorine-b-residual-chlorine-c-sum-of-applied-and-residual-chlorine-d-difference-of-applied-and-residual-chlorine\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-15T02:39:50+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":"Chlorine demand of water is equal to A. Applied chlorine B. Residual chlorine C. Sum of applied and residual chlorine D. Difference of applied and residual chlorine","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\/chlorine-demand-of-water-is-equal-to-a-applied-chlorine-b-residual-chlorine-c-sum-of-applied-and-residual-chlorine-d-difference-of-applied-and-residual-chlorine\/","og_locale":"en_US","og_type":"article","og_title":"Chlorine demand of water is equal to A. Applied chlorine B. Residual chlorine C. Sum of applied and residual chlorine D. Difference of applied and residual chlorine","og_description":"Join Our Telegram Channel Subscribe on YouTube","og_url":"https:\/\/exam.pscnotes.com\/mcq\/chlorine-demand-of-water-is-equal-to-a-applied-chlorine-b-residual-chlorine-c-sum-of-applied-and-residual-chlorine-d-difference-of-applied-and-residual-chlorine\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2024-04-15T02:39:50+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\/chlorine-demand-of-water-is-equal-to-a-applied-chlorine-b-residual-chlorine-c-sum-of-applied-and-residual-chlorine-d-difference-of-applied-and-residual-chlorine\/","url":"https:\/\/exam.pscnotes.com\/mcq\/chlorine-demand-of-water-is-equal-to-a-applied-chlorine-b-residual-chlorine-c-sum-of-applied-and-residual-chlorine-d-difference-of-applied-and-residual-chlorine\/","name":"Chlorine demand of water is equal to A. Applied chlorine B. Residual chlorine C. Sum of applied and residual chlorine D. Difference of applied and residual chlorine","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2024-04-15T02:39:50+00:00","dateModified":"2024-04-15T02:39:50+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/chlorine-demand-of-water-is-equal-to-a-applied-chlorine-b-residual-chlorine-c-sum-of-applied-and-residual-chlorine-d-difference-of-applied-and-residual-chlorine\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/chlorine-demand-of-water-is-equal-to-a-applied-chlorine-b-residual-chlorine-c-sum-of-applied-and-residual-chlorine-d-difference-of-applied-and-residual-chlorine\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/chlorine-demand-of-water-is-equal-to-a-applied-chlorine-b-residual-chlorine-c-sum-of-applied-and-residual-chlorine-d-difference-of-applied-and-residual-chlorine\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"mcq","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/"},{"@type":"ListItem","position":3,"name":"Civil engineering","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/civil-engineering\/"},{"@type":"ListItem","position":4,"name":"Environmental engineering","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/civil-engineering\/environmental-engineering\/"},{"@type":"ListItem","position":5,"name":"Chlorine demand of water is equal to A. Applied chlorine B. Residual chlorine C. Sum of applied and residual chlorine D. Difference of applied and residual chlorine"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/d97f17072bfa490596c8f78363955d55?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/d97f17072bfa490596c8f78363955d55?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/7123"}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=7123"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/7123\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=7123"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=7123"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=7123"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}