{"id":88457,"date":"2025-06-01T07:11:35","date_gmt":"2025-06-01T07:11:35","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88457"},"modified":"2025-06-01T07:11:35","modified_gmt":"2025-06-01T07:11:35","slug":"which-one-of-the-following-reactions-will-give-no-nitric-oxide-gas-a","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-reactions-will-give-no-nitric-oxide-gas-a\/","title":{"rendered":"Which one of the following reactions will give NO (nitric oxide) gas a"},"content":{"rendered":"

Which one of the following reactions will give NO (nitric oxide) gas as one of the products?<\/p>\n

[amp_mcq option1=”3Cu + 8HNO\u2083 (dilute)\u2192” option2=”Cu + 4HNO\u2083 (conc.)\u2192” option3=”4Zn + 10HNO\u2083 (dilute)\u2192” option4=”Zn + 4HNO\u2083 (conc.)\u2192” correct=”option1″]<\/p>\n

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This question was previously asked in<\/div>\n
UPSC NDA-2 – 2018<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe reaction of copper (Cu) with dilute nitric acid (HNO\u2083) produces nitric oxide (NO) gas, copper(II) nitrate (Cu(NO\u2083)\u2082), and water. The balanced chemical equation is 3Cu + 8HNO\u2083 (dilute) \u2192 3Cu(NO\u2083)\u2082 + 2NO + 4H\u2082O.
\n<\/section>\n
\n– Nitric acid is a strong oxidizing agent, and its reaction with metals produces nitrogen oxides rather than hydrogen gas (which is produced by the reaction of active metals with non-oxidizing acids).
\n– The specific nitrogen oxide produced depends on the concentration of HNO\u2083 and the reactivity of the metal. Dilute HNO\u2083 reacts with moderately reactive metals like copper to produce NO. Concentrated HNO\u2083 reacts with most metals (except very unreactive ones) to produce nitrogen dioxide (NO\u2082).
\n<\/section>\n
\n– Reaction with concentrated HNO\u2083: Cu + 4HNO\u2083 (conc.) \u2192 Cu(NO\u2083)\u2082 + 2NO\u2082 + 2H\u2082O (produces NO\u2082).
\n– Reaction with very dilute HNO\u2083 and highly reactive metals (like Zn): 4Zn + 10HNO\u2083 (very dilute) \u2192 4Zn(NO\u2083)\u2082 + N\u2082O + 5H\u2082O (produces nitrous oxide, N\u2082O) or even NH\u2084NO\u2083. The reaction given in option C with dilute HNO3 producing N2O is also correct for zinc.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following reactions will give NO (nitric oxide) gas as one of the products? [amp_mcq option1=”3Cu + 8HNO\u2083 (dilute)\u2192” option2=”Cu + 4HNO\u2083 (conc.)\u2192” option3=”4Zn + 10HNO\u2083 (dilute)\u2192” option4=”Zn + 4HNO\u2083 (conc.)\u2192” correct=”option1″] This question was previously asked in UPSC NDA-2 – 2018 Download PDFAttempt Online The reaction of copper (Cu) with dilute … <\/p>\n

Detailed SolutionWhich one of the following reactions will give NO (nitric oxide) gas a<\/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":[1114,1096,1239],"class_list":["post-88457","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1114","tag-chemistry","tag-inorganic-chemistry","no-featured-image-padding"],"yoast_head":"\nWhich one of the following reactions will give NO (nitric oxide) gas a<\/title>\n<meta name=\"description\" content=\"The reaction of copper (Cu) with dilute nitric acid (HNO\u2083) produces nitric oxide (NO) gas, copper(II) nitrate (Cu(NO\u2083)\u2082), and water. The balanced chemical equation is 3Cu + 8HNO\u2083 (dilute) \u2192 3Cu(NO\u2083)\u2082 + 2NO + 4H\u2082O. - Nitric acid is a strong oxidizing agent, and its reaction with metals produces nitrogen oxides rather than hydrogen gas (which is produced by the reaction of active metals with non-oxidizing acids). - The specific nitrogen oxide produced depends on the concentration of HNO\u2083 and the reactivity of the metal. Dilute HNO\u2083 reacts with moderately reactive metals like copper to produce NO. Concentrated HNO\u2083 reacts with most metals (except very unreactive ones) to produce nitrogen dioxide (NO\u2082).\" \/>\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-reactions-will-give-no-nitric-oxide-gas-a\/\" \/>\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 reactions will give NO (nitric oxide) gas a\" \/>\n<meta property=\"og:description\" content=\"The reaction of copper (Cu) with dilute nitric acid (HNO\u2083) produces nitric oxide (NO) gas, copper(II) nitrate (Cu(NO\u2083)\u2082), and water. The balanced chemical equation is 3Cu + 8HNO\u2083 (dilute) \u2192 3Cu(NO\u2083)\u2082 + 2NO + 4H\u2082O. - Nitric acid is a strong oxidizing agent, and its reaction with metals produces nitrogen oxides rather than hydrogen gas (which is produced by the reaction of active metals with non-oxidizing acids). - The specific nitrogen oxide produced depends on the concentration of HNO\u2083 and the reactivity of the metal. Dilute HNO\u2083 reacts with moderately reactive metals like copper to produce NO. Concentrated HNO\u2083 reacts with most metals (except very unreactive ones) to produce nitrogen dioxide (NO\u2082).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-reactions-will-give-no-nitric-oxide-gas-a\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:11:35+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 reactions will give NO (nitric oxide) gas a","description":"The reaction of copper (Cu) with dilute nitric acid (HNO\u2083) produces nitric oxide (NO) gas, copper(II) nitrate (Cu(NO\u2083)\u2082), and water. The balanced chemical equation is 3Cu + 8HNO\u2083 (dilute) \u2192 3Cu(NO\u2083)\u2082 + 2NO + 4H\u2082O. - Nitric acid is a strong oxidizing agent, and its reaction with metals produces nitrogen oxides rather than hydrogen gas (which is produced by the reaction of active metals with non-oxidizing acids). - The specific nitrogen oxide produced depends on the concentration of HNO\u2083 and the reactivity of the metal. Dilute HNO\u2083 reacts with moderately reactive metals like copper to produce NO. Concentrated HNO\u2083 reacts with most metals (except very unreactive ones) to produce nitrogen dioxide (NO\u2082).","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-reactions-will-give-no-nitric-oxide-gas-a\/","og_locale":"en_US","og_type":"article","og_title":"Which one of the following reactions will give NO (nitric oxide) gas a","og_description":"The reaction of copper (Cu) with dilute nitric acid (HNO\u2083) produces nitric oxide (NO) gas, copper(II) nitrate (Cu(NO\u2083)\u2082), and water. The balanced chemical equation is 3Cu + 8HNO\u2083 (dilute) \u2192 3Cu(NO\u2083)\u2082 + 2NO + 4H\u2082O. - Nitric acid is a strong oxidizing agent, and its reaction with metals produces nitrogen oxides rather than hydrogen gas (which is produced by the reaction of active metals with non-oxidizing acids). - The specific nitrogen oxide produced depends on the concentration of HNO\u2083 and the reactivity of the metal. Dilute HNO\u2083 reacts with moderately reactive metals like copper to produce NO. Concentrated HNO\u2083 reacts with most metals (except very unreactive ones) to produce nitrogen dioxide (NO\u2082).","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-reactions-will-give-no-nitric-oxide-gas-a\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T07:11:35+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-reactions-will-give-no-nitric-oxide-gas-a\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-reactions-will-give-no-nitric-oxide-gas-a\/","name":"Which one of the following reactions will give NO (nitric oxide) gas a","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T07:11:35+00:00","dateModified":"2025-06-01T07:11:35+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The reaction of copper (Cu) with dilute nitric acid (HNO\u2083) produces nitric oxide (NO) gas, copper(II) nitrate (Cu(NO\u2083)\u2082), and water. The balanced chemical equation is 3Cu + 8HNO\u2083 (dilute) \u2192 3Cu(NO\u2083)\u2082 + 2NO + 4H\u2082O. - Nitric acid is a strong oxidizing agent, and its reaction with metals produces nitrogen oxides rather than hydrogen gas (which is produced by the reaction of active metals with non-oxidizing acids). - The specific nitrogen oxide produced depends on the concentration of HNO\u2083 and the reactivity of the metal. Dilute HNO\u2083 reacts with moderately reactive metals like copper to produce NO. Concentrated HNO\u2083 reacts with most metals (except very unreactive ones) to produce nitrogen dioxide (NO\u2082).","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-reactions-will-give-no-nitric-oxide-gas-a\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-reactions-will-give-no-nitric-oxide-gas-a\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-reactions-will-give-no-nitric-oxide-gas-a\/#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 reactions will give NO (nitric oxide) gas a"}]},{"@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\/88457","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=88457"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/88457\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=88457"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=88457"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=88457"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}