{"id":84635,"date":"2025-06-01T02:42:17","date_gmt":"2025-06-01T02:42:17","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=84635"},"modified":"2025-06-01T02:42:17","modified_gmt":"2025-06-01T02:42:17","slug":"the-ph-value-of-a-sample-of-multiple-distilled-water-is","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-ph-value-of-a-sample-of-multiple-distilled-water-is\/","title":{"rendered":"The pH value of a sample of multiple-distilled water is"},"content":{"rendered":"

The pH value of a sample of multiple-distilled water is<\/p>\n

[amp_mcq option1=”zero” option2=”14″ option3=”very near to zero” option4=”very near to seven” correct=”option4″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CDS-1 – 2017<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe correct answer is D) very near to seven.
\n<\/section>\n
\npH is a measure of the acidity or alkalinity of a solution. Pure water is neutral because the concentration of hydrogen ions (H\u207a) equals the concentration of hydroxide ions (OH\u207b) produced by the auto-ionization of water (H\u2082O \u21cc H\u207a + OH\u207b). At standard temperature (25\u00b0C), in pure water, [H\u207a] = 10\u207b\u2077 mol\/L. The pH is defined as -log\u2081\u2080[H\u207a]. Thus, the pH of pure water is -log\u2081\u2080(10\u207b\u2077) = 7. Multiple-distilled water is highly purified water with most impurities removed. While it’s difficult to achieve a perfect pH of 7 in practice (e.g., due to dissolved CO\u2082 from the air forming carbonic acid, making it slightly acidic, or dissolved substances from the container), the theoretical and practical pH of pure, neutral water is very close to 7.
\n<\/section>\n
\nA pH of zero indicates a highly acidic solution (e.g., 1M HCl). A pH of 14 indicates a highly alkaline solution (e.g., 1M NaOH). Values very near zero would indicate strong acidity, which is not characteristic of pure water. Values very near seven indicate neutrality, which is the property of pure water.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

The pH value of a sample of multiple-distilled water is [amp_mcq option1=”zero” option2=”14″ option3=”very near to zero” option4=”very near to seven” correct=”option4″] This question was previously asked in UPSC CDS-1 – 2017 Download PDFAttempt Online The correct answer is D) very near to seven. pH is a measure of the acidity or alkalinity of a … <\/p>\n

Detailed SolutionThe pH value of a sample of multiple-distilled water is<\/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":[1087],"tags":[1101,1202,1096],"class_list":["post-84635","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-1","tag-1101","tag-acid-base-and-salt","tag-chemistry","no-featured-image-padding"],"yoast_head":"\nThe pH value of a sample of multiple-distilled water is<\/title>\n<meta name=\"description\" content=\"The correct answer is D) very near to seven. pH is a measure of the acidity or alkalinity of a solution. Pure water is neutral because the concentration of hydrogen ions (H\u207a) equals the concentration of hydroxide ions (OH\u207b) produced by the auto-ionization of water (H\u2082O \u21cc H\u207a + OH\u207b). At standard temperature (25\u00b0C), in pure water, [H\u207a] = 10\u207b\u2077 mol\/L. The pH is defined as -log\u2081\u2080[H\u207a]. Thus, the pH of pure water is -log\u2081\u2080(10\u207b\u2077) = 7. Multiple-distilled water is highly purified water with most impurities removed. While it's difficult to achieve a perfect pH of 7 in practice (e.g., due to dissolved CO\u2082 from the air forming carbonic acid, making it slightly acidic, or dissolved substances from the container), the theoretical and practical pH of pure, neutral water is very close to 7.\" \/>\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\/the-ph-value-of-a-sample-of-multiple-distilled-water-is\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The pH value of a sample of multiple-distilled water is\" \/>\n<meta property=\"og:description\" content=\"The correct answer is D) very near to seven. pH is a measure of the acidity or alkalinity of a solution. Pure water is neutral because the concentration of hydrogen ions (H\u207a) equals the concentration of hydroxide ions (OH\u207b) produced by the auto-ionization of water (H\u2082O \u21cc H\u207a + OH\u207b). At standard temperature (25\u00b0C), in pure water, [H\u207a] = 10\u207b\u2077 mol\/L. The pH is defined as -log\u2081\u2080[H\u207a]. Thus, the pH of pure water is -log\u2081\u2080(10\u207b\u2077) = 7. Multiple-distilled water is highly purified water with most impurities removed. While it's difficult to achieve a perfect pH of 7 in practice (e.g., due to dissolved CO\u2082 from the air forming carbonic acid, making it slightly acidic, or dissolved substances from the container), the theoretical and practical pH of pure, neutral water is very close to 7.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/the-ph-value-of-a-sample-of-multiple-distilled-water-is\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T02:42:17+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":"The pH value of a sample of multiple-distilled water is","description":"The correct answer is D) very near to seven. pH is a measure of the acidity or alkalinity of a solution. Pure water is neutral because the concentration of hydrogen ions (H\u207a) equals the concentration of hydroxide ions (OH\u207b) produced by the auto-ionization of water (H\u2082O \u21cc H\u207a + OH\u207b). At standard temperature (25\u00b0C), in pure water, [H\u207a] = 10\u207b\u2077 mol\/L. The pH is defined as -log\u2081\u2080[H\u207a]. Thus, the pH of pure water is -log\u2081\u2080(10\u207b\u2077) = 7. Multiple-distilled water is highly purified water with most impurities removed. While it's difficult to achieve a perfect pH of 7 in practice (e.g., due to dissolved CO\u2082 from the air forming carbonic acid, making it slightly acidic, or dissolved substances from the container), the theoretical and practical pH of pure, neutral water is very close to 7.","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\/the-ph-value-of-a-sample-of-multiple-distilled-water-is\/","og_locale":"en_US","og_type":"article","og_title":"The pH value of a sample of multiple-distilled water is","og_description":"The correct answer is D) very near to seven. pH is a measure of the acidity or alkalinity of a solution. Pure water is neutral because the concentration of hydrogen ions (H\u207a) equals the concentration of hydroxide ions (OH\u207b) produced by the auto-ionization of water (H\u2082O \u21cc H\u207a + OH\u207b). At standard temperature (25\u00b0C), in pure water, [H\u207a] = 10\u207b\u2077 mol\/L. The pH is defined as -log\u2081\u2080[H\u207a]. Thus, the pH of pure water is -log\u2081\u2080(10\u207b\u2077) = 7. Multiple-distilled water is highly purified water with most impurities removed. While it's difficult to achieve a perfect pH of 7 in practice (e.g., due to dissolved CO\u2082 from the air forming carbonic acid, making it slightly acidic, or dissolved substances from the container), the theoretical and practical pH of pure, neutral water is very close to 7.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/the-ph-value-of-a-sample-of-multiple-distilled-water-is\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T02:42:17+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\/the-ph-value-of-a-sample-of-multiple-distilled-water-is\/","url":"https:\/\/exam.pscnotes.com\/mcq\/the-ph-value-of-a-sample-of-multiple-distilled-water-is\/","name":"The pH value of a sample of multiple-distilled water is","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T02:42:17+00:00","dateModified":"2025-06-01T02:42:17+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The correct answer is D) very near to seven. pH is a measure of the acidity or alkalinity of a solution. Pure water is neutral because the concentration of hydrogen ions (H\u207a) equals the concentration of hydroxide ions (OH\u207b) produced by the auto-ionization of water (H\u2082O \u21cc H\u207a + OH\u207b). At standard temperature (25\u00b0C), in pure water, [H\u207a] = 10\u207b\u2077 mol\/L. The pH is defined as -log\u2081\u2080[H\u207a]. Thus, the pH of pure water is -log\u2081\u2080(10\u207b\u2077) = 7. Multiple-distilled water is highly purified water with most impurities removed. While it's difficult to achieve a perfect pH of 7 in practice (e.g., due to dissolved CO\u2082 from the air forming carbonic acid, making it slightly acidic, or dissolved substances from the container), the theoretical and practical pH of pure, neutral water is very close to 7.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/the-ph-value-of-a-sample-of-multiple-distilled-water-is\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/the-ph-value-of-a-sample-of-multiple-distilled-water-is\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/the-ph-value-of-a-sample-of-multiple-distilled-water-is\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC CDS-1","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-cds-1\/"},{"@type":"ListItem","position":3,"name":"The pH value of a sample of multiple-distilled water is"}]},{"@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\/84635","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=84635"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/84635\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=84635"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=84635"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=84635"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}