{"id":89162,"date":"2025-06-01T09:57:15","date_gmt":"2025-06-01T09:57:15","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=89162"},"modified":"2025-06-01T09:57:15","modified_gmt":"2025-06-01T09:57:15","slug":"match-list-i-with-list-ii-and-select-the-correct-answer-using-the-code-105","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/match-list-i-with-list-ii-and-select-the-correct-answer-using-the-code-105\/","title":{"rendered":"Match List-I with List-II and select the correct answer using the code"},"content":{"rendered":"<p>Match List-I with List-II and select the correct answer using the code given below :<\/p>\n<table>\n<tr>\n<th>List-I (Process)<\/th>\n<th>List-II (Contaminant)<\/th>\n<\/tr>\n<tr>\n<td>A. Aeration followed by filtration<\/td>\n<td>1. Removal of colour<\/td>\n<\/tr>\n<tr>\n<td>B. Reverse Osmosis<\/td>\n<td>2. Removal of microorganism<\/td>\n<\/tr>\n<tr>\n<td>C. Filtration through activated carbon<\/td>\n<td>3. Removal of iron<\/td>\n<\/tr>\n<tr>\n<td>D. Treatment with UV light<\/td>\n<td>4. Removal of excess salts<\/td>\n<\/tr>\n<\/table>\n<p>Code:<\/p>\n<p>[amp_mcq option1=&#8221;3 1 4 2&#8243; option2=&#8221;4 3 2 1&#8243; option3=&#8221;3 4 1 2&#8243; option4=&#8221;2 4 1 3&#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; 2009<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-capf-2009.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-capf-2009\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nThe correct match between the water treatment processes and the contaminants removed is A-3, B-4, C-1, D-2.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\n&#8211; A. Aeration followed by filtration: Aeration oxidizes dissolved iron and manganese, forming precipitates that are then removed by filtration. Thus, it&#8217;s used for the removal of iron (3).<br \/>\n&#8211; B. Reverse Osmosis: This process uses a semipermeable membrane to remove dissolved salts and other impurities from water, effectively used for desalination or removal of excess salts (4).<br \/>\n&#8211; C. Filtration through activated carbon: Activated carbon is highly effective at adsorbing organic compounds, chlorine, and other substances that cause color, odor, and taste in water. Thus, it&#8217;s used for the removal of colour (1).<br \/>\n&#8211; D. Treatment with UV light: Ultraviolet (UV) light treatment is a disinfection method that inactivates microorganisms like bacteria and viruses by damaging their DNA. Thus, it&#8217;s used for the removal of microorganisms (2).<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nMatching the processes to the contaminants:<br \/>\nA. Aeration followed by filtration &#8211; 3. Removal of iron<br \/>\nB. Reverse Osmosis &#8211; 4. Removal of excess salts<br \/>\nC. Filtration through activated carbon &#8211; 1. Removal of colour<br \/>\nD. Treatment with UV light &#8211; 2. Removal of microorganism<br \/>\nThis corresponds to the code 3 4 1 2, which is option C.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Match List-I with List-II and select the correct answer using the code given below : List-I (Process) List-II (Contaminant) A. Aeration followed by filtration 1. Removal of colour B. Reverse Osmosis 2. Removal of microorganism C. Filtration through activated carbon 3. Removal of iron D. Treatment with UV light 4. Removal of excess salts Code: &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Match List-I with List-II and select the correct answer using the code\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/match-list-i-with-list-ii-and-select-the-correct-answer-using-the-code-105\/#more-89162\">Detailed Solution<span class=\"screen-reader-text\">Match List-I with List-II and select the correct answer using the code<\/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":[1462,1096,1155],"class_list":["post-89162","post","type-post","status-publish","format-standard","hentry","category-upsc-capf","tag-1462","tag-chemistry","tag-physical-and-chemical-changes-solution","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>Match List-I with List-II and select the correct answer using the code<\/title>\n<meta name=\"description\" content=\"The correct match between the water treatment processes and the contaminants removed is A-3, B-4, C-1, D-2. - A. Aeration followed by filtration: Aeration oxidizes dissolved iron and manganese, forming precipitates that are then removed by filtration. Thus, it&#039;s used for the removal of iron (3). - B. Reverse Osmosis: This process uses a semipermeable membrane to remove dissolved salts and other impurities from water, effectively used for desalination or removal of excess salts (4). - C. Filtration through activated carbon: Activated carbon is highly effective at adsorbing organic compounds, chlorine, and other substances that cause color, odor, and taste in water. Thus, it&#039;s used for the removal of colour (1). - D. Treatment with UV light: Ultraviolet (UV) light treatment is a disinfection method that inactivates microorganisms like bacteria and viruses by damaging their DNA. Thus, it&#039;s used for the removal of microorganisms (2).\" \/>\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\/match-list-i-with-list-ii-and-select-the-correct-answer-using-the-code-105\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Match List-I with List-II and select the correct answer using the code\" \/>\n<meta property=\"og:description\" content=\"The correct match between the water treatment processes and the contaminants removed is A-3, B-4, C-1, D-2. - A. Aeration followed by filtration: Aeration oxidizes dissolved iron and manganese, forming precipitates that are then removed by filtration. Thus, it&#039;s used for the removal of iron (3). - B. Reverse Osmosis: This process uses a semipermeable membrane to remove dissolved salts and other impurities from water, effectively used for desalination or removal of excess salts (4). - C. Filtration through activated carbon: Activated carbon is highly effective at adsorbing organic compounds, chlorine, and other substances that cause color, odor, and taste in water. Thus, it&#039;s used for the removal of colour (1). - D. Treatment with UV light: Ultraviolet (UV) light treatment is a disinfection method that inactivates microorganisms like bacteria and viruses by damaging their DNA. Thus, it&#039;s used for the removal of microorganisms (2).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/match-list-i-with-list-ii-and-select-the-correct-answer-using-the-code-105\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T09:57:15+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":"Match List-I with List-II and select the correct answer using the code","description":"The correct match between the water treatment processes and the contaminants removed is A-3, B-4, C-1, D-2. - A. Aeration followed by filtration: Aeration oxidizes dissolved iron and manganese, forming precipitates that are then removed by filtration. Thus, it's used for the removal of iron (3). - B. Reverse Osmosis: This process uses a semipermeable membrane to remove dissolved salts and other impurities from water, effectively used for desalination or removal of excess salts (4). - C. Filtration through activated carbon: Activated carbon is highly effective at adsorbing organic compounds, chlorine, and other substances that cause color, odor, and taste in water. Thus, it's used for the removal of colour (1). - D. Treatment with UV light: Ultraviolet (UV) light treatment is a disinfection method that inactivates microorganisms like bacteria and viruses by damaging their DNA. Thus, it's used for the removal of microorganisms (2).","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\/match-list-i-with-list-ii-and-select-the-correct-answer-using-the-code-105\/","og_locale":"en_US","og_type":"article","og_title":"Match List-I with List-II and select the correct answer using the code","og_description":"The correct match between the water treatment processes and the contaminants removed is A-3, B-4, C-1, D-2. - A. Aeration followed by filtration: Aeration oxidizes dissolved iron and manganese, forming precipitates that are then removed by filtration. Thus, it's used for the removal of iron (3). - B. Reverse Osmosis: This process uses a semipermeable membrane to remove dissolved salts and other impurities from water, effectively used for desalination or removal of excess salts (4). - C. Filtration through activated carbon: Activated carbon is highly effective at adsorbing organic compounds, chlorine, and other substances that cause color, odor, and taste in water. Thus, it's used for the removal of colour (1). - D. Treatment with UV light: Ultraviolet (UV) light treatment is a disinfection method that inactivates microorganisms like bacteria and viruses by damaging their DNA. Thus, it's used for the removal of microorganisms (2).","og_url":"https:\/\/exam.pscnotes.com\/mcq\/match-list-i-with-list-ii-and-select-the-correct-answer-using-the-code-105\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T09:57:15+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\/match-list-i-with-list-ii-and-select-the-correct-answer-using-the-code-105\/","url":"https:\/\/exam.pscnotes.com\/mcq\/match-list-i-with-list-ii-and-select-the-correct-answer-using-the-code-105\/","name":"Match List-I with List-II and select the correct answer using the code","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T09:57:15+00:00","dateModified":"2025-06-01T09:57:15+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The correct match between the water treatment processes and the contaminants removed is A-3, B-4, C-1, D-2. - A. Aeration followed by filtration: Aeration oxidizes dissolved iron and manganese, forming precipitates that are then removed by filtration. Thus, it's used for the removal of iron (3). - B. Reverse Osmosis: This process uses a semipermeable membrane to remove dissolved salts and other impurities from water, effectively used for desalination or removal of excess salts (4). - C. Filtration through activated carbon: Activated carbon is highly effective at adsorbing organic compounds, chlorine, and other substances that cause color, odor, and taste in water. Thus, it's used for the removal of colour (1). - D. Treatment with UV light: Ultraviolet (UV) light treatment is a disinfection method that inactivates microorganisms like bacteria and viruses by damaging their DNA. Thus, it's used for the removal of microorganisms (2).","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/match-list-i-with-list-ii-and-select-the-correct-answer-using-the-code-105\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/match-list-i-with-list-ii-and-select-the-correct-answer-using-the-code-105\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/match-list-i-with-list-ii-and-select-the-correct-answer-using-the-code-105\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC CAPF","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-capf\/"},{"@type":"ListItem","position":3,"name":"Match List-I with List-II and select the correct answer using the code"}]},{"@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\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?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\/89162","targetHints":{"allow":["GET"]}}],"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=89162"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/89162\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=89162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=89162"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=89162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}