{"id":85801,"date":"2025-06-01T03:28:26","date_gmt":"2025-06-01T03:28:26","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=85801"},"modified":"2025-06-01T03:28:26","modified_gmt":"2025-06-01T03:28:26","slug":"reaction-between-which-of-the-following-two-reactants-will-produce-hyd","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/reaction-between-which-of-the-following-two-reactants-will-produce-hyd\/","title":{"rendered":"Reaction between which of the following two reactants will produce hyd"},"content":{"rendered":"

Reaction between which of the following two reactants will produce hydrogen gas?<\/p>\n

[amp_mcq option1=”Magnesium and hydrochloric acid” option2=”Copper and dilute nitric acid” option3=”Calcium carbonate and hydrochloric acid” option4=”Zinc and nitric acid” correct=”option1″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CDS-2 – 2018<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
The reaction between Magnesium and hydrochloric acid will produce hydrogen gas.<\/section>\n
Reactive metals, generally those above hydrogen in the reactivity series (like Magnesium, Zinc, etc.), react with dilute acids to displace hydrogen and produce hydrogen gas and a salt.<\/section>\n
The reaction in option A is: Mg(s) + 2HCl(aq) \u2192 MgCl\u2082(aq) + H\u2082(g).
\nOption B (Copper and dilute nitric acid): Nitric acid is an oxidizing acid, and while it reacts with copper, it typically produces nitrogen oxides rather than hydrogen gas.
\nOption C (Calcium carbonate and hydrochloric acid): This produces carbon dioxide gas (CO\u2082), water, and calcium chloride (CaCO\u2083 + 2HCl \u2192 CaCl\u2082 + H\u2082O + CO\u2082).
\nOption D (Zinc and nitric acid): Similar to copper, zinc reacts with nitric acid to produce zinc nitrate and nitrogen oxides (or ammonium nitrate with very dilute acid), not primarily hydrogen gas.<\/section>\n","protected":false},"excerpt":{"rendered":"

Reaction between which of the following two reactants will produce hydrogen gas? [amp_mcq option1=”Magnesium and hydrochloric acid” option2=”Copper and dilute nitric acid” option3=”Calcium carbonate and hydrochloric acid” option4=”Zinc and nitric acid” correct=”option1″] This question was previously asked in UPSC CDS-2 – 2018 Download PDFAttempt Online The reaction between Magnesium and hydrochloric acid will produce hydrogen … <\/p>\n

Detailed SolutionReaction between which of the following two reactants will produce hyd<\/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":[1114,1096,1161],"class_list":["post-85801","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-2","tag-1114","tag-chemistry","tag-hydrogen-and-its-compounds","no-featured-image-padding"],"yoast_head":"\nReaction between which of the following two reactants will produce hyd<\/title>\n<meta name=\"description\" content=\"The reaction between Magnesium and hydrochloric acid will produce hydrogen gas. Reactive metals, generally those above hydrogen in the reactivity series (like Magnesium, Zinc, etc.), react with dilute acids to displace hydrogen and produce hydrogen gas and a salt.\" \/>\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\/reaction-between-which-of-the-following-two-reactants-will-produce-hyd\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Reaction between which of the following two reactants will produce hyd\" \/>\n<meta property=\"og:description\" content=\"The reaction between Magnesium and hydrochloric acid will produce hydrogen gas. Reactive metals, generally those above hydrogen in the reactivity series (like Magnesium, Zinc, etc.), react with dilute acids to displace hydrogen and produce hydrogen gas and a salt.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/reaction-between-which-of-the-following-two-reactants-will-produce-hyd\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T03:28:26+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":"Reaction between which of the following two reactants will produce hyd","description":"The reaction between Magnesium and hydrochloric acid will produce hydrogen gas. Reactive metals, generally those above hydrogen in the reactivity series (like Magnesium, Zinc, etc.), react with dilute acids to displace hydrogen and produce hydrogen gas and a salt.","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\/reaction-between-which-of-the-following-two-reactants-will-produce-hyd\/","og_locale":"en_US","og_type":"article","og_title":"Reaction between which of the following two reactants will produce hyd","og_description":"The reaction between Magnesium and hydrochloric acid will produce hydrogen gas. Reactive metals, generally those above hydrogen in the reactivity series (like Magnesium, Zinc, etc.), react with dilute acids to displace hydrogen and produce hydrogen gas and a salt.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/reaction-between-which-of-the-following-two-reactants-will-produce-hyd\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T03:28:26+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\/reaction-between-which-of-the-following-two-reactants-will-produce-hyd\/","url":"https:\/\/exam.pscnotes.com\/mcq\/reaction-between-which-of-the-following-two-reactants-will-produce-hyd\/","name":"Reaction between which of the following two reactants will produce hyd","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T03:28:26+00:00","dateModified":"2025-06-01T03:28:26+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The reaction between Magnesium and hydrochloric acid will produce hydrogen gas. Reactive metals, generally those above hydrogen in the reactivity series (like Magnesium, Zinc, etc.), react with dilute acids to displace hydrogen and produce hydrogen gas and a salt.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/reaction-between-which-of-the-following-two-reactants-will-produce-hyd\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/reaction-between-which-of-the-following-two-reactants-will-produce-hyd\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/reaction-between-which-of-the-following-two-reactants-will-produce-hyd\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC CDS-2","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-cds-2\/"},{"@type":"ListItem","position":3,"name":"Reaction between which of the following two reactants will produce hyd"}]},{"@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\/85801","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=85801"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/85801\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=85801"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=85801"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=85801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}