{"id":86183,"date":"2025-06-01T03:39:42","date_gmt":"2025-06-01T03:39:42","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=86183"},"modified":"2025-06-01T03:39:42","modified_gmt":"2025-06-01T03:39:42","slug":"which-of-the-following-statements-is-are-correct-1-all-the-bases-a","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-is-are-correct-1-all-the-bases-a\/","title":{"rendered":"Which of the following statements is\/are correct?\n  1. All the bases a"},"content":{"rendered":"<p>Which of the following statements is\/are correct?<\/p>\n<ul>\n<li>1. All the bases are alkali.<\/li>\n<li>2. All alkalis dissolve in water.<\/li>\n<li>3. Alkalis are soapy to touch, bitter in taste and corrosive in nature.<\/li>\n<\/ul>\n<p>Select the correct answer using the code given below :<\/p>\n<p>[amp_mcq option1=&#8221;1 only&#8221; option2=&#8221;1 and 3 only&#8221; option3=&#8221;2 and 3 only&#8221; option4=&#8221;3 only&#8221; 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 CDS-2 &#8211; 2021<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-cds-2-2021.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-cds-2-2021\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nStatement 1 is false. Bases are substances that can accept protons or donate electron pairs. Alkalis are a specific type of base &#8211; those that are soluble in water and dissociate to produce hydroxide ions (OH\u207b). Therefore, all alkalis are bases, but not all bases are alkalis (because not all bases dissolve in water). Statement 2 is true by definition: Alkalis are precisely those bases that are soluble in water. Statement 3 is true: Alkalis have characteristic properties including feeling soapy\/slippery to touch, having a bitter taste, and being corrosive.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\nAn alkali is a base that is soluble in water. Thus, the set of alkalis is a subset of the set of bases. General properties of alkalis include slipperiness, bitter taste, and corrosiveness.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nExamples of bases include metal oxides (like CuO), metal hydroxides (like NaOH), and ammonia (NH\u2083). Examples of alkalis include soluble metal hydroxides (like NaOH, KOH, Ca(OH)\u2082, NH\u2084OH). CuO is a base but not an alkali as it is insoluble in water.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Which of the following statements is\/are correct? 1. All the bases are alkali. 2. All alkalis dissolve in water. 3. Alkalis are soapy to touch, bitter in taste and corrosive in nature. Select the correct answer using the code given below : [amp_mcq option1=&#8221;1 only&#8221; option2=&#8221;1 and 3 only&#8221; option3=&#8221;2 and 3 only&#8221; option4=&#8221;3 only&#8221; &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Which of the following statements is\/are correct?\n  1. All the bases a\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-is-are-correct-1-all-the-bases-a\/#more-86183\">Detailed Solution<span class=\"screen-reader-text\">Which of the following statements is\/are correct?<br \/>\n  1. All the bases a<\/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":[1088],"tags":[1110,1202,1096],"class_list":["post-86183","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-2","tag-1110","tag-acid-base-and-salt","tag-chemistry","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>Which of the following statements is\/are correct?  1. All the bases a<\/title>\n<meta name=\"description\" content=\"Statement 1 is false. Bases are substances that can accept protons or donate electron pairs. Alkalis are a specific type of base - those that are soluble in water and dissociate to produce hydroxide ions (OH\u207b). Therefore, all alkalis are bases, but not all bases are alkalis (because not all bases dissolve in water). Statement 2 is true by definition: Alkalis are precisely those bases that are soluble in water. Statement 3 is true: Alkalis have characteristic properties including feeling soapy\/slippery to touch, having a bitter taste, and being corrosive. An alkali is a base that is soluble in water. Thus, the set of alkalis is a subset of the set of bases. General properties of alkalis include slipperiness, bitter taste, and corrosiveness.\" \/>\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-of-the-following-statements-is-are-correct-1-all-the-bases-a\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which of the following statements is\/are correct?  1. All the bases a\" \/>\n<meta property=\"og:description\" content=\"Statement 1 is false. Bases are substances that can accept protons or donate electron pairs. Alkalis are a specific type of base - those that are soluble in water and dissociate to produce hydroxide ions (OH\u207b). Therefore, all alkalis are bases, but not all bases are alkalis (because not all bases dissolve in water). Statement 2 is true by definition: Alkalis are precisely those bases that are soluble in water. Statement 3 is true: Alkalis have characteristic properties including feeling soapy\/slippery to touch, having a bitter taste, and being corrosive. An alkali is a base that is soluble in water. Thus, the set of alkalis is a subset of the set of bases. General properties of alkalis include slipperiness, bitter taste, and corrosiveness.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-is-are-correct-1-all-the-bases-a\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T03:39:42+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 of the following statements is\/are correct?  1. All the bases a","description":"Statement 1 is false. Bases are substances that can accept protons or donate electron pairs. Alkalis are a specific type of base - those that are soluble in water and dissociate to produce hydroxide ions (OH\u207b). Therefore, all alkalis are bases, but not all bases are alkalis (because not all bases dissolve in water). Statement 2 is true by definition: Alkalis are precisely those bases that are soluble in water. Statement 3 is true: Alkalis have characteristic properties including feeling soapy\/slippery to touch, having a bitter taste, and being corrosive. An alkali is a base that is soluble in water. Thus, the set of alkalis is a subset of the set of bases. General properties of alkalis include slipperiness, bitter taste, and corrosiveness.","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-of-the-following-statements-is-are-correct-1-all-the-bases-a\/","og_locale":"en_US","og_type":"article","og_title":"Which of the following statements is\/are correct?  1. All the bases a","og_description":"Statement 1 is false. Bases are substances that can accept protons or donate electron pairs. Alkalis are a specific type of base - those that are soluble in water and dissociate to produce hydroxide ions (OH\u207b). Therefore, all alkalis are bases, but not all bases are alkalis (because not all bases dissolve in water). Statement 2 is true by definition: Alkalis are precisely those bases that are soluble in water. Statement 3 is true: Alkalis have characteristic properties including feeling soapy\/slippery to touch, having a bitter taste, and being corrosive. An alkali is a base that is soluble in water. Thus, the set of alkalis is a subset of the set of bases. General properties of alkalis include slipperiness, bitter taste, and corrosiveness.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-is-are-correct-1-all-the-bases-a\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T03:39:42+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-of-the-following-statements-is-are-correct-1-all-the-bases-a\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-is-are-correct-1-all-the-bases-a\/","name":"Which of the following statements is\/are correct? 1. All the bases a","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T03:39:42+00:00","dateModified":"2025-06-01T03:39:42+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Statement 1 is false. Bases are substances that can accept protons or donate electron pairs. Alkalis are a specific type of base - those that are soluble in water and dissociate to produce hydroxide ions (OH\u207b). Therefore, all alkalis are bases, but not all bases are alkalis (because not all bases dissolve in water). Statement 2 is true by definition: Alkalis are precisely those bases that are soluble in water. Statement 3 is true: Alkalis have characteristic properties including feeling soapy\/slippery to touch, having a bitter taste, and being corrosive. An alkali is a base that is soluble in water. Thus, the set of alkalis is a subset of the set of bases. General properties of alkalis include slipperiness, bitter taste, and corrosiveness.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-is-are-correct-1-all-the-bases-a\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-is-are-correct-1-all-the-bases-a\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-is-are-correct-1-all-the-bases-a\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC CDS-2","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-cds-2\/"},{"@type":"ListItem","position":3,"name":"Which of the following statements is\/are correct? 1. All the bases a"}]},{"@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\/86183","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=86183"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/86183\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=86183"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=86183"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=86183"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}