{"id":21613,"date":"2024-04-15T06:08:36","date_gmt":"2024-04-15T06:08:36","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=21613"},"modified":"2024-04-15T06:08:36","modified_gmt":"2024-04-15T06:08:36","slug":"which-of-the-following-is-used-as-a-lubricant-a-graphite-b-silica-c-iron-oxide-d-diamond","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-used-as-a-lubricant-a-graphite-b-silica-c-iron-oxide-d-diamond\/","title":{"rendered":"Which of the following is used as a lubricant? A. Graphite B. Silica C. Iron Oxide D. Diamond"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;Graphite&#8221; option2=&#8221;Silica&#8221; option3=&#8221;Iron Oxide&#8221; option4=&#8221;Diamond&#8221; correct=&#8221;option1&#8243;]<!--more--><\/p>\n<p>The correct answer is A. Graphite.<\/p>\n<p>Graphite is a form of carbon that is used as a lubricant because it is soft and slippery. It is also a good conductor of heat and electricity, which makes it useful in a variety of applications.<\/p>\n<p>Silica is a type of sand that is not used as a lubricant. It is hard and abrasive, which would actually damage the surfaces that it is supposed to be lubricating.<\/p>\n<p>Iron oxide is a type of rust that is also not used as a lubricant. It is also hard and abrasive, and it would not provide any benefit as a lubricant.<\/p>\n<p>Diamond is the hardest natural substance on Earth. It is also very brittle, and it would not be able to withstand the pressure and heat that is generated when two surfaces rub together. Therefore, diamond is not used as a lubricant.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;Graphite&#8221; option2=&#8221;Silica&#8221; option3=&#8221;Iron Oxide&#8221; option4=&#8221;Diamond&#8221; correct=&#8221;option1&#8243;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[692],"tags":[],"class_list":["post-21613","post","type-post","status-publish","format-standard","hentry","category-general-science","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 is used as a lubricant? A. Graphite B. Silica C. Iron Oxide D. Diamond<\/title>\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-is-used-as-a-lubricant-a-graphite-b-silica-c-iron-oxide-d-diamond\/\" \/>\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 is used as a lubricant? A. Graphite B. Silica C. Iron Oxide D. Diamond\" \/>\n<meta property=\"og:description\" content=\"[amp_mcq option1=&#8221;Graphite&#8221; option2=&#8221;Silica&#8221; option3=&#8221;Iron Oxide&#8221; option4=&#8221;Diamond&#8221; correct=&#8221;option1&#8243;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-used-as-a-lubricant-a-graphite-b-silica-c-iron-oxide-d-diamond\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-15T06:08:36+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 is used as a lubricant? A. Graphite B. Silica C. Iron Oxide D. Diamond","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-is-used-as-a-lubricant-a-graphite-b-silica-c-iron-oxide-d-diamond\/","og_locale":"en_US","og_type":"article","og_title":"Which of the following is used as a lubricant? A. Graphite B. Silica C. Iron Oxide D. Diamond","og_description":"[amp_mcq option1=&#8221;Graphite&#8221; option2=&#8221;Silica&#8221; option3=&#8221;Iron Oxide&#8221; option4=&#8221;Diamond&#8221; correct=&#8221;option1&#8243;]","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-used-as-a-lubricant-a-graphite-b-silica-c-iron-oxide-d-diamond\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2024-04-15T06:08:36+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-is-used-as-a-lubricant-a-graphite-b-silica-c-iron-oxide-d-diamond\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-used-as-a-lubricant-a-graphite-b-silica-c-iron-oxide-d-diamond\/","name":"Which of the following is used as a lubricant? A. Graphite B. Silica C. Iron Oxide D. Diamond","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2024-04-15T06:08:36+00:00","dateModified":"2024-04-15T06:08:36+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-used-as-a-lubricant-a-graphite-b-silica-c-iron-oxide-d-diamond\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-used-as-a-lubricant-a-graphite-b-silica-c-iron-oxide-d-diamond\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-used-as-a-lubricant-a-graphite-b-silica-c-iron-oxide-d-diamond\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"mcq","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/"},{"@type":"ListItem","position":3,"name":"General science","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/general-science\/"},{"@type":"ListItem","position":4,"name":"Which of the following is used as a lubricant? A. Graphite B. Silica C. Iron Oxide D. Diamond"}]},{"@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\/21613","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=21613"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/21613\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=21613"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=21613"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=21613"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}