{"id":88553,"date":"2025-06-01T07:14:37","date_gmt":"2025-06-01T07:14:37","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88553"},"modified":"2025-06-01T07:14:37","modified_gmt":"2025-06-01T07:14:37","slug":"which-one-of-the-following-substances-is-not-a-mixture-2","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-substances-is-not-a-mixture-2\/","title":{"rendered":"Which one of the following substances is not a mixture ?"},"content":{"rendered":"

Which one of the following substances is not a mixture ?<\/p>\n

[amp_mcq option1=”Tin” option2=”Sea water” option3=”Soil” option4=”Air” correct=”option1″]<\/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
\nMatter can be classified into pure substances (elements and compounds) and mixtures. A mixture is formed when two or more substances are combined physically but not chemically. The components of a mixture retain their individual properties and can often be separated by physical means.
\nA) Tin (Sn) is a chemical element, found on the periodic table. Elements are pure substances, consisting only of one type of atom. Therefore, tin is not a mixture.
\nB) Sea water is a solution of various salts (like sodium chloride, magnesium chloride, etc.), dissolved gases, and other substances in water. It is a homogeneous mixture (a solution).
\nC) Soil is a complex combination of inorganic mineral particles, organic matter, water, air, and living organisms. It is a heterogeneous mixture.
\nD) Air is a mixture of gases, primarily nitrogen ($\\text{N}_2$), oxygen ($\\text{O}_2$), argon (Ar), carbon dioxide ($\\text{CO}_2$), and trace gases. It is a homogeneous mixture (a solution of gases).
\nSince Tin is an element and not a combination of different substances physically mixed, it is not a mixture.
\n<\/section>\n
\n– Pure substances include elements and compounds.
\n– Mixtures are physical combinations of two or more substances.
\n– Elements cannot be broken down into simpler substances by chemical means.
\n<\/section>\n
\nElements are the basic building blocks of matter. Compounds are formed by chemical reactions between elements in fixed proportions. Mixtures can have variable compositions. Identifying whether something is a mixture involves checking if it’s a pure element or compound, or a physical blend of multiple substances.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following substances is not a mixture ? [amp_mcq option1=”Tin” option2=”Sea water” option3=”Soil” option4=”Air” correct=”option1″] This question was previously asked in UPSC NDA-2 – 2019 Download PDFAttempt Online Matter can be classified into pure substances (elements and compounds) and mixtures. A mixture is formed when two or more substances are combined physically … <\/p>\n

Detailed SolutionWhich one of the following substances is not a mixture ?<\/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":[1119,1096,1155],"class_list":["post-88553","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1119","tag-chemistry","tag-physical-and-chemical-changes-solution","no-featured-image-padding"],"yoast_head":"\nWhich one of the following substances is not a mixture ?<\/title>\n<meta name=\"description\" content=\"Matter can be classified into pure substances (elements and compounds) and mixtures. A mixture is formed when two or more substances are combined physically but not chemically. The components of a mixture retain their individual properties and can often be separated by physical means. A) Tin (Sn) is a chemical element, found on the periodic table. Elements are pure substances, consisting only of one type of atom. Therefore, tin is not a mixture. B) Sea water is a solution of various salts (like sodium chloride, magnesium chloride, etc.), dissolved gases, and other substances in water. It is a homogeneous mixture (a solution). C) Soil is a complex combination of inorganic mineral particles, organic matter, water, air, and living organisms. It is a heterogeneous mixture. D) Air is a mixture of gases, primarily nitrogen ($text{N}_2$), oxygen ($text{O}_2$), argon (Ar), carbon dioxide ($text{CO}_2$), and trace gases. It is a homogeneous mixture (a solution of gases). Since Tin is an element and not a combination of different substances physically mixed, it is not a mixture. - Pure substances include elements and compounds. - Mixtures are physical combinations of two or more substances. - Elements cannot be broken down into simpler substances by chemical means.\" \/>\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-substances-is-not-a-mixture-2\/\" \/>\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 substances is not a mixture ?\" \/>\n<meta property=\"og:description\" content=\"Matter can be classified into pure substances (elements and compounds) and mixtures. A mixture is formed when two or more substances are combined physically but not chemically. The components of a mixture retain their individual properties and can often be separated by physical means. A) Tin (Sn) is a chemical element, found on the periodic table. Elements are pure substances, consisting only of one type of atom. Therefore, tin is not a mixture. B) Sea water is a solution of various salts (like sodium chloride, magnesium chloride, etc.), dissolved gases, and other substances in water. It is a homogeneous mixture (a solution). C) Soil is a complex combination of inorganic mineral particles, organic matter, water, air, and living organisms. It is a heterogeneous mixture. D) Air is a mixture of gases, primarily nitrogen ($text{N}_2$), oxygen ($text{O}_2$), argon (Ar), carbon dioxide ($text{CO}_2$), and trace gases. It is a homogeneous mixture (a solution of gases). Since Tin is an element and not a combination of different substances physically mixed, it is not a mixture. - Pure substances include elements and compounds. - Mixtures are physical combinations of two or more substances. - Elements cannot be broken down into simpler substances by chemical means.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-substances-is-not-a-mixture-2\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:14:37+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 substances is not a mixture ?","description":"Matter can be classified into pure substances (elements and compounds) and mixtures. A mixture is formed when two or more substances are combined physically but not chemically. The components of a mixture retain their individual properties and can often be separated by physical means. A) Tin (Sn) is a chemical element, found on the periodic table. Elements are pure substances, consisting only of one type of atom. Therefore, tin is not a mixture. B) Sea water is a solution of various salts (like sodium chloride, magnesium chloride, etc.), dissolved gases, and other substances in water. It is a homogeneous mixture (a solution). C) Soil is a complex combination of inorganic mineral particles, organic matter, water, air, and living organisms. It is a heterogeneous mixture. D) Air is a mixture of gases, primarily nitrogen ($text{N}_2$), oxygen ($text{O}_2$), argon (Ar), carbon dioxide ($text{CO}_2$), and trace gases. It is a homogeneous mixture (a solution of gases). Since Tin is an element and not a combination of different substances physically mixed, it is not a mixture. - Pure substances include elements and compounds. - Mixtures are physical combinations of two or more substances. - Elements cannot be broken down into simpler substances by chemical means.","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-substances-is-not-a-mixture-2\/","og_locale":"en_US","og_type":"article","og_title":"Which one of the following substances is not a mixture ?","og_description":"Matter can be classified into pure substances (elements and compounds) and mixtures. A mixture is formed when two or more substances are combined physically but not chemically. The components of a mixture retain their individual properties and can often be separated by physical means. A) Tin (Sn) is a chemical element, found on the periodic table. Elements are pure substances, consisting only of one type of atom. Therefore, tin is not a mixture. B) Sea water is a solution of various salts (like sodium chloride, magnesium chloride, etc.), dissolved gases, and other substances in water. It is a homogeneous mixture (a solution). C) Soil is a complex combination of inorganic mineral particles, organic matter, water, air, and living organisms. It is a heterogeneous mixture. D) Air is a mixture of gases, primarily nitrogen ($text{N}_2$), oxygen ($text{O}_2$), argon (Ar), carbon dioxide ($text{CO}_2$), and trace gases. It is a homogeneous mixture (a solution of gases). Since Tin is an element and not a combination of different substances physically mixed, it is not a mixture. - Pure substances include elements and compounds. - Mixtures are physical combinations of two or more substances. - Elements cannot be broken down into simpler substances by chemical means.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-substances-is-not-a-mixture-2\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T07:14:37+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-substances-is-not-a-mixture-2\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-substances-is-not-a-mixture-2\/","name":"Which one of the following substances is not a mixture ?","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T07:14:37+00:00","dateModified":"2025-06-01T07:14:37+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Matter can be classified into pure substances (elements and compounds) and mixtures. A mixture is formed when two or more substances are combined physically but not chemically. The components of a mixture retain their individual properties and can often be separated by physical means. A) Tin (Sn) is a chemical element, found on the periodic table. Elements are pure substances, consisting only of one type of atom. Therefore, tin is not a mixture. B) Sea water is a solution of various salts (like sodium chloride, magnesium chloride, etc.), dissolved gases, and other substances in water. It is a homogeneous mixture (a solution). C) Soil is a complex combination of inorganic mineral particles, organic matter, water, air, and living organisms. It is a heterogeneous mixture. D) Air is a mixture of gases, primarily nitrogen ($\\text{N}_2$), oxygen ($\\text{O}_2$), argon (Ar), carbon dioxide ($\\text{CO}_2$), and trace gases. It is a homogeneous mixture (a solution of gases). Since Tin is an element and not a combination of different substances physically mixed, it is not a mixture. - Pure substances include elements and compounds. - Mixtures are physical combinations of two or more substances. - Elements cannot be broken down into simpler substances by chemical means.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-substances-is-not-a-mixture-2\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-substances-is-not-a-mixture-2\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-substances-is-not-a-mixture-2\/#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":"Which one of the following substances is not a mixture ?"}]},{"@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\/88553","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=88553"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/88553\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=88553"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=88553"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=88553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}