{"id":87739,"date":"2025-06-01T06:53:13","date_gmt":"2025-06-01T06:53:13","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=87739"},"modified":"2025-06-01T06:53:13","modified_gmt":"2025-06-01T06:53:13","slug":"solder-is-an-alloy-of-2","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/solder-is-an-alloy-of-2\/","title":{"rendered":"Solder is an alloy of"},"content":{"rendered":"

Solder is an alloy of<\/p>\n

[amp_mcq option1=”Cu and Sn.” option2=”Fe and Zn.” option3=”Pb and Sn.” option4=”Ag and Zn.” correct=”option3″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-1 – 2021<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nSolder is typically an alloy of lead (Pb) and tin (Sn).
\n<\/section>\n
\nTraditional solder, widely used for joining metals in plumbing and electronics, is an alloy primarily composed of lead and tin. The ratio of lead to tin affects the melting point and properties of the solder. Common compositions include 60% tin and 40% lead, or the eutectic alloy of 63% tin and 37% lead which has the lowest melting point.
\n<\/section>\n
\nDue to environmental concerns about lead toxicity, lead-free solders have become increasingly popular, especially in electronics. Lead-free solders often consist mainly of tin alloyed with other metals like silver (Ag), copper (Cu), and sometimes bismuth (Bi) or antimony (Sb). However, without specifying “lead-free”, the standard Pb-Sn alloy is implied.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Solder is an alloy of [amp_mcq option1=”Cu and Sn.” option2=”Fe and Zn.” option3=”Pb and Sn.” option4=”Ag and Zn.” correct=”option3″] This question was previously asked in UPSC NDA-1 – 2021 Download PDFAttempt Online Solder is typically an alloy of lead (Pb) and tin (Sn). Traditional solder, widely used for joining metals in plumbing and electronics, is … <\/p>\n

Detailed SolutionSolder is an alloy of<\/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":[1093],"tags":[1110,1141,1096],"class_list":["post-87739","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-1","tag-1110","tag-alloys","tag-chemistry","no-featured-image-padding"],"yoast_head":"\nSolder is an alloy of<\/title>\n<meta name=\"description\" content=\"Solder is typically an alloy of lead (Pb) and tin (Sn). Traditional solder, widely used for joining metals in plumbing and electronics, is an alloy primarily composed of lead and tin. The ratio of lead to tin affects the melting point and properties of the solder. Common compositions include 60% tin and 40% lead, or the eutectic alloy of 63% tin and 37% lead which has the lowest melting point.\" \/>\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\/solder-is-an-alloy-of-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Solder is an alloy of\" \/>\n<meta property=\"og:description\" content=\"Solder is typically an alloy of lead (Pb) and tin (Sn). Traditional solder, widely used for joining metals in plumbing and electronics, is an alloy primarily composed of lead and tin. The ratio of lead to tin affects the melting point and properties of the solder. Common compositions include 60% tin and 40% lead, or the eutectic alloy of 63% tin and 37% lead which has the lowest melting point.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/solder-is-an-alloy-of-2\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T06:53:13+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":"Solder is an alloy of","description":"Solder is typically an alloy of lead (Pb) and tin (Sn). Traditional solder, widely used for joining metals in plumbing and electronics, is an alloy primarily composed of lead and tin. The ratio of lead to tin affects the melting point and properties of the solder. Common compositions include 60% tin and 40% lead, or the eutectic alloy of 63% tin and 37% lead which has the lowest melting point.","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\/solder-is-an-alloy-of-2\/","og_locale":"en_US","og_type":"article","og_title":"Solder is an alloy of","og_description":"Solder is typically an alloy of lead (Pb) and tin (Sn). Traditional solder, widely used for joining metals in plumbing and electronics, is an alloy primarily composed of lead and tin. The ratio of lead to tin affects the melting point and properties of the solder. Common compositions include 60% tin and 40% lead, or the eutectic alloy of 63% tin and 37% lead which has the lowest melting point.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/solder-is-an-alloy-of-2\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T06:53:13+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\/solder-is-an-alloy-of-2\/","url":"https:\/\/exam.pscnotes.com\/mcq\/solder-is-an-alloy-of-2\/","name":"Solder is an alloy of","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T06:53:13+00:00","dateModified":"2025-06-01T06:53:13+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Solder is typically an alloy of lead (Pb) and tin (Sn). Traditional solder, widely used for joining metals in plumbing and electronics, is an alloy primarily composed of lead and tin. The ratio of lead to tin affects the melting point and properties of the solder. Common compositions include 60% tin and 40% lead, or the eutectic alloy of 63% tin and 37% lead which has the lowest melting point.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/solder-is-an-alloy-of-2\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/solder-is-an-alloy-of-2\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/solder-is-an-alloy-of-2\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC NDA-1","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-nda-1\/"},{"@type":"ListItem","position":3,"name":"Solder is an alloy of"}]},{"@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\/87739","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=87739"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/87739\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=87739"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=87739"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=87739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}