{"id":86181,"date":"2025-06-01T03:39:40","date_gmt":"2025-06-01T03:39:40","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=86181"},"modified":"2025-06-01T03:39:40","modified_gmt":"2025-06-01T03:39:40","slug":"which-one-of-the-following-is-the-correct-reactivity-order-of-metals-r","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-the-correct-reactivity-order-of-metals-r\/","title":{"rendered":"Which one of the following is the correct reactivity order of metals r"},"content":{"rendered":"

Which one of the following is the correct reactivity order of metals reacting with dilute HCl?<\/p>\n

[amp_mcq option1=”Mg > Al > Zn > Fe” option2=”Mg < Al < Zn < Fe\" option3=\"Mg > Zn > Fe > Al” option4=”Fe > Mg > Al > Zn” correct=”option1″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CDS-2 – 2021<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe reactivity of metals with dilute acids like HCl generally decreases down the reactivity series. Metals above hydrogen in the reactivity series can displace hydrogen from dilute acids. The correct order of reactivity for the given metals is Mg > Al > Zn > Fe. Magnesium is the most reactive among these, followed by Aluminum, then Zinc, and finally Iron.
\n<\/section>\n
\nThe reactivity series of metals is determined by their tendency to lose electrons and form positive ions. Metals higher in the series are more reactive and can displace less reactive metals (or hydrogen from acids) from their compounds. The order of reactivity of these common metals is Mg > Al > Zn > Fe.
\n<\/section>\n
\nWhile this is the general order, the rate of reaction can sometimes be affected by factors like surface passivation (e.g., Aluminum forming a protective oxide layer), but the inherent reactivity order based on standard electrode potentials is Mg > Al > Zn > Fe.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following is the correct reactivity order of metals reacting with dilute HCl? [amp_mcq option1=”Mg > Al > Zn > Fe” option2=”Mg < Al < Zn < Fe\" option3=\"Mg > Zn > Fe > Al” option4=”Fe > Mg > Al > Zn” correct=”option1″] This question was previously asked in UPSC CDS-2 – … <\/p>\n

Detailed SolutionWhich one of the following is the correct reactivity order of metals r<\/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":[1110,1096,1109],"class_list":["post-86181","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-2","tag-1110","tag-chemistry","tag-metals-minerals-ores-properties-uses","no-featured-image-padding"],"yoast_head":"\nWhich one of the following is the correct reactivity order of metals r<\/title>\n<meta name=\"description\" content=\"The reactivity of metals with dilute acids like HCl generally decreases down the reactivity series. Metals above hydrogen in the reactivity series can displace hydrogen from dilute acids. The correct order of reactivity for the given metals is Mg > Al > Zn > Fe. Magnesium is the most reactive among these, followed by Aluminum, then Zinc, and finally Iron. The reactivity series of metals is determined by their tendency to lose electrons and form positive ions. Metals higher in the series are more reactive and can displace less reactive metals (or hydrogen from acids) from their compounds. The order of reactivity of these common metals is Mg > Al > Zn > Fe.\" \/>\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-is-the-correct-reactivity-order-of-metals-r\/\" \/>\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 is the correct reactivity order of metals r\" \/>\n<meta property=\"og:description\" content=\"The reactivity of metals with dilute acids like HCl generally decreases down the reactivity series. Metals above hydrogen in the reactivity series can displace hydrogen from dilute acids. The correct order of reactivity for the given metals is Mg > Al > Zn > Fe. Magnesium is the most reactive among these, followed by Aluminum, then Zinc, and finally Iron. The reactivity series of metals is determined by their tendency to lose electrons and form positive ions. Metals higher in the series are more reactive and can displace less reactive metals (or hydrogen from acids) from their compounds. The order of reactivity of these common metals is Mg > Al > Zn > Fe.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-the-correct-reactivity-order-of-metals-r\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T03:39:40+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 is the correct reactivity order of metals r","description":"The reactivity of metals with dilute acids like HCl generally decreases down the reactivity series. Metals above hydrogen in the reactivity series can displace hydrogen from dilute acids. The correct order of reactivity for the given metals is Mg > Al > Zn > Fe. Magnesium is the most reactive among these, followed by Aluminum, then Zinc, and finally Iron. The reactivity series of metals is determined by their tendency to lose electrons and form positive ions. Metals higher in the series are more reactive and can displace less reactive metals (or hydrogen from acids) from their compounds. The order of reactivity of these common metals is Mg > Al > Zn > Fe.","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-is-the-correct-reactivity-order-of-metals-r\/","og_locale":"en_US","og_type":"article","og_title":"Which one of the following is the correct reactivity order of metals r","og_description":"The reactivity of metals with dilute acids like HCl generally decreases down the reactivity series. Metals above hydrogen in the reactivity series can displace hydrogen from dilute acids. The correct order of reactivity for the given metals is Mg > Al > Zn > Fe. Magnesium is the most reactive among these, followed by Aluminum, then Zinc, and finally Iron. The reactivity series of metals is determined by their tendency to lose electrons and form positive ions. Metals higher in the series are more reactive and can displace less reactive metals (or hydrogen from acids) from their compounds. The order of reactivity of these common metals is Mg > Al > Zn > Fe.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-the-correct-reactivity-order-of-metals-r\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T03:39:40+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-is-the-correct-reactivity-order-of-metals-r\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-the-correct-reactivity-order-of-metals-r\/","name":"Which one of the following is the correct reactivity order of metals r","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T03:39:40+00:00","dateModified":"2025-06-01T03:39:40+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The reactivity of metals with dilute acids like HCl generally decreases down the reactivity series. 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