{"id":88540,"date":"2025-06-01T07:14:14","date_gmt":"2025-06-01T07:14:14","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88540"},"modified":"2025-06-01T07:14:14","modified_gmt":"2025-06-01T07:14:14","slug":"a-sample-of-soft-soap-contains","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/a-sample-of-soft-soap-contains\/","title":{"rendered":"A sample of ‘soft soap’ contains"},"content":{"rendered":"

A sample of ‘soft soap’ contains<\/p>\n

[amp_mcq option1=”Caesium” option2=”Potassium” option3=”Calcium” option4=”Magnesium” correct=”option2″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-2 – 2019<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nSoaps are salts of fatty acids. The difference between hard soap and soft soap lies in the cation used. Hard soaps are typically the sodium salts of fatty acids (e.g., derived from NaOH reacting with fat\/oil), while soft soaps are typically the potassium salts of fatty acids (e.g., derived from KOH reacting with fat\/oil). Therefore, a sample of soft soap contains Potassium.
\n<\/section>\n
\n– Soap is produced by the saponification of fats or oils with a strong alkali.
\n– Hard soaps use sodium hydroxide (NaOH) as the alkali, resulting in sodium salts of fatty acids.
\n– Soft soaps use potassium hydroxide (KOH) as the alkali, resulting in potassium salts of fatty acids.
\n<\/section>\n
\n– Soft soaps are generally more soluble in water and produce a richer lather than hard soaps. They are often used in liquid soaps and shaving creams.
\n– Calcium and Magnesium ions are present in hard water and react with soap to form insoluble precipitates (“soap scum”), which is why soap is less effective in hard water. They are not typically added as components of soap itself.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

A sample of ‘soft soap’ contains [amp_mcq option1=”Caesium” option2=”Potassium” option3=”Calcium” option4=”Magnesium” correct=”option2″] This question was previously asked in UPSC NDA-2 – 2019 Download PDFAttempt Online Soaps are salts of fatty acids. The difference between hard soap and soft soap lies in the cation used. Hard soaps are typically the sodium salts of fatty acids (e.g., … <\/p>\n

Detailed SolutionA sample of ‘soft soap’ contains<\/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":[1119,1096,1445],"class_list":["post-88540","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1119","tag-chemistry","tag-detergents-and-soap","no-featured-image-padding"],"yoast_head":"\nA sample of 'soft soap' contains<\/title>\n<meta name=\"description\" content=\"Soaps are salts of fatty acids. The difference between hard soap and soft soap lies in the cation used. Hard soaps are typically the sodium salts of fatty acids (e.g., derived from NaOH reacting with fat\/oil), while soft soaps are typically the potassium salts of fatty acids (e.g., derived from KOH reacting with fat\/oil). Therefore, a sample of soft soap contains Potassium. - Soap is produced by the saponification of fats or oils with a strong alkali. - Hard soaps use sodium hydroxide (NaOH) as the alkali, resulting in sodium salts of fatty acids. - Soft soaps use potassium hydroxide (KOH) as the alkali, resulting in potassium salts of fatty acids.\" \/>\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\/a-sample-of-soft-soap-contains\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A sample of 'soft soap' contains\" \/>\n<meta property=\"og:description\" content=\"Soaps are salts of fatty acids. The difference between hard soap and soft soap lies in the cation used. Hard soaps are typically the sodium salts of fatty acids (e.g., derived from NaOH reacting with fat\/oil), while soft soaps are typically the potassium salts of fatty acids (e.g., derived from KOH reacting with fat\/oil). Therefore, a sample of soft soap contains Potassium. - Soap is produced by the saponification of fats or oils with a strong alkali. - Hard soaps use sodium hydroxide (NaOH) as the alkali, resulting in sodium salts of fatty acids. - Soft soaps use potassium hydroxide (KOH) as the alkali, resulting in potassium salts of fatty acids.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/a-sample-of-soft-soap-contains\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:14:14+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":"A sample of 'soft soap' contains","description":"Soaps are salts of fatty acids. The difference between hard soap and soft soap lies in the cation used. Hard soaps are typically the sodium salts of fatty acids (e.g., derived from NaOH reacting with fat\/oil), while soft soaps are typically the potassium salts of fatty acids (e.g., derived from KOH reacting with fat\/oil). Therefore, a sample of soft soap contains Potassium. - Soap is produced by the saponification of fats or oils with a strong alkali. - Hard soaps use sodium hydroxide (NaOH) as the alkali, resulting in sodium salts of fatty acids. - Soft soaps use potassium hydroxide (KOH) as the alkali, resulting in potassium salts of fatty acids.","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\/a-sample-of-soft-soap-contains\/","og_locale":"en_US","og_type":"article","og_title":"A sample of 'soft soap' contains","og_description":"Soaps are salts of fatty acids. The difference between hard soap and soft soap lies in the cation used. Hard soaps are typically the sodium salts of fatty acids (e.g., derived from NaOH reacting with fat\/oil), while soft soaps are typically the potassium salts of fatty acids (e.g., derived from KOH reacting with fat\/oil). Therefore, a sample of soft soap contains Potassium. - Soap is produced by the saponification of fats or oils with a strong alkali. - Hard soaps use sodium hydroxide (NaOH) as the alkali, resulting in sodium salts of fatty acids. - Soft soaps use potassium hydroxide (KOH) as the alkali, resulting in potassium salts of fatty acids.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/a-sample-of-soft-soap-contains\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T07:14:14+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\/a-sample-of-soft-soap-contains\/","url":"https:\/\/exam.pscnotes.com\/mcq\/a-sample-of-soft-soap-contains\/","name":"A sample of 'soft soap' contains","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T07:14:14+00:00","dateModified":"2025-06-01T07:14:14+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Soaps are salts of fatty acids. The difference between hard soap and soft soap lies in the cation used. Hard soaps are typically the sodium salts of fatty acids (e.g., derived from NaOH reacting with fat\/oil), while soft soaps are typically the potassium salts of fatty acids (e.g., derived from KOH reacting with fat\/oil). Therefore, a sample of soft soap contains Potassium. - Soap is produced by the saponification of fats or oils with a strong alkali. - Hard soaps use sodium hydroxide (NaOH) as the alkali, resulting in sodium salts of fatty acids. - Soft soaps use potassium hydroxide (KOH) as the alkali, resulting in potassium salts of fatty acids.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/a-sample-of-soft-soap-contains\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/a-sample-of-soft-soap-contains\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/a-sample-of-soft-soap-contains\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC NDA-2","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-nda-2\/"},{"@type":"ListItem","position":3,"name":"A sample of ‘soft soap’ contains"}]},{"@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\/88540","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=88540"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/88540\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=88540"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=88540"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=88540"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}