{"id":88458,"date":"2025-06-01T07:11:37","date_gmt":"2025-06-01T07:11:37","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88458"},"modified":"2025-06-01T07:11:37","modified_gmt":"2025-06-01T07:11:37","slug":"which-one-of-the-following-is-a-tribasic-acid","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-a-tribasic-acid\/","title":{"rendered":"Which one of the following is a tribasic acid?"},"content":{"rendered":"

Which one of the following is a tribasic acid?<\/p>\n

[amp_mcq option1=”Hydrochloric acid” option2=”Nitric acid” option3=”Sulphuric acid” option4=”Phosphoric acid” correct=”option4″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-2 – 2018<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nPhosphoric acid (H\u2083PO\u2084) is a tribasic acid because it can donate three protons (H\u207a ions) in a stepwise manner.
\n<\/section>\n
\n– The basicity of an acid refers to the number of acidic hydrogen atoms per molecule that can be donated as protons.
\n– Monobasic acids donate one proton (e.g., HCl, HNO\u2083).
\n– Dibasic acids donate two protons (e.g., H\u2082SO\u2084, H\u2082CO\u2083).
\n– Tribasic acids donate three protons (e.g., H\u2083PO\u2084).
\n<\/section>\n
\nThe dissociation of phosphoric acid occurs in three steps:
\n1. H\u2083PO\u2084 \u21cc H\u207a + H\u2082PO\u2084\u207b
\n2. H\u2082PO\u2084\u207b \u21cc H\u207a + HPO\u2084\u00b2\u207b
\n3. HPO\u2084\u00b2\u207b \u21cc H\u207a + PO\u2084\u00b3\u207b
\nHydrochloric acid (HCl) and nitric acid (HNO\u2083) are monobasic. Sulphuric acid (H\u2082SO\u2084) is dibasic.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following is a tribasic acid? [amp_mcq option1=”Hydrochloric acid” option2=”Nitric acid” option3=”Sulphuric acid” option4=”Phosphoric acid” correct=”option4″] This question was previously asked in UPSC NDA-2 – 2018 Download PDFAttempt Online Phosphoric acid (H\u2083PO\u2084) is a tribasic acid because it can donate three protons (H\u207a ions) in a stepwise manner. – The basicity of … <\/p>\n

Detailed SolutionWhich one of the following is a tribasic acid?<\/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":[1094],"tags":[1114,1202,1096],"class_list":["post-88458","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1114","tag-acid-base-and-salt","tag-chemistry","no-featured-image-padding"],"yoast_head":"\nWhich one of the following is a tribasic acid?<\/title>\n<meta name=\"description\" content=\"Phosphoric acid (H\u2083PO\u2084) is a tribasic acid because it can donate three protons (H\u207a ions) in a stepwise manner. - The basicity of an acid refers to the number of acidic hydrogen atoms per molecule that can be donated as protons. - Monobasic acids donate one proton (e.g., HCl, HNO\u2083). - Dibasic acids donate two protons (e.g., H\u2082SO\u2084, H\u2082CO\u2083). - Tribasic acids donate three protons (e.g., H\u2083PO\u2084).\" \/>\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\/which-one-of-the-following-is-a-tribasic-acid\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following is a tribasic acid?\" \/>\n<meta property=\"og:description\" content=\"Phosphoric acid (H\u2083PO\u2084) is a tribasic acid because it can donate three protons (H\u207a ions) in a stepwise manner. - The basicity of an acid refers to the number of acidic hydrogen atoms per molecule that can be donated as protons. - Monobasic acids donate one proton (e.g., HCl, HNO\u2083). - Dibasic acids donate two protons (e.g., H\u2082SO\u2084, H\u2082CO\u2083). - Tribasic acids donate three protons (e.g., H\u2083PO\u2084).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-a-tribasic-acid\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:11:37+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":"Which one of the following is a tribasic acid?","description":"Phosphoric acid (H\u2083PO\u2084) is a tribasic acid because it can donate three protons (H\u207a ions) in a stepwise manner. - The basicity of an acid refers to the number of acidic hydrogen atoms per molecule that can be donated as protons. - Monobasic acids donate one proton (e.g., HCl, HNO\u2083). - Dibasic acids donate two protons (e.g., H\u2082SO\u2084, H\u2082CO\u2083). - Tribasic acids donate three protons (e.g., H\u2083PO\u2084).","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\/which-one-of-the-following-is-a-tribasic-acid\/","og_locale":"en_US","og_type":"article","og_title":"Which one of the following is a tribasic acid?","og_description":"Phosphoric acid (H\u2083PO\u2084) is a tribasic acid because it can donate three protons (H\u207a ions) in a stepwise manner. - The basicity of an acid refers to the number of acidic hydrogen atoms per molecule that can be donated as protons. - Monobasic acids donate one proton (e.g., HCl, HNO\u2083). - Dibasic acids donate two protons (e.g., H\u2082SO\u2084, H\u2082CO\u2083). - Tribasic acids donate three protons (e.g., H\u2083PO\u2084).","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-a-tribasic-acid\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T07:11:37+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\/which-one-of-the-following-is-a-tribasic-acid\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-a-tribasic-acid\/","name":"Which one of the following is a tribasic acid?","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T07:11:37+00:00","dateModified":"2025-06-01T07:11:37+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Phosphoric acid (H\u2083PO\u2084) is a tribasic acid because it can donate three protons (H\u207a ions) in a stepwise manner. - 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