{"id":91328,"date":"2025-06-01T10:53:29","date_gmt":"2025-06-01T10:53:29","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=91328"},"modified":"2025-06-01T10:53:29","modified_gmt":"2025-06-01T10:53:29","slug":"with-reference-to-fuel-cells-in-which-hydrogen-rich-fuel-and-oxygen","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-fuel-cells-in-which-hydrogen-rich-fuel-and-oxygen\/","title":{"rendered":"With reference to \u2018fuel cells\u2019 in which hydrogen-rich fuel and oxygen"},"content":{"rendered":"<p>With reference to \u2018fuel cells\u2019 in which hydrogen-rich fuel and oxygen are used to generate electricity, consider the following statements :<\/p>\n<ul>\n<li>1. If pure hydrogen is used as a fuel, the fuel cell emits heat and water as by-products.<\/li>\n<li>2. Fuel cells can be used for powering buildings and not for small devices like laptop computers.<\/li>\n<li>3. Fuel cells produce electricity in the form of Alternating Current (AC).<\/li>\n<\/ul>\n<p>Which of the statements given above is\/are correct?<\/p>\n<p>[amp_mcq option1=&#8221;1 only&#8221; option2=&#8221;2 and 3 only&#8221; option3=&#8221;1 and 3 only&#8221; option4=&#8221;1, 2 and 3&#8243; correct=&#8221;option1&#8243;]<\/p>\n<div class=\"psc-box-pyq-exam-year-detail\">\n<div class=\"pyq-exam\">\n<div class=\"psc-heading\">This question was previously asked in<\/div>\n<div class=\"psc-title line-ellipsis\">UPSC IAS &#8211; 2015<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-ias-2015.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-ias-2015\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">Only statement 1 is correct.<\/section>\n<section id=\"pyq-key-points\">In a hydrogen fuel cell, hydrogen reacts with oxygen to produce electricity, water, and heat. This process is efficient and produces only water and heat as by-products when pure hydrogen is used.<\/section>\n<section id=\"pyq-additional-information\">Statement 2 is incorrect because fuel cells are highly scalable and can power everything from large buildings, vehicles, and grid-level energy storage to small devices like laptops and mobile phones. Statement 3 is incorrect because fuel cells generate Direct Current (DC) electricity. An inverter is required to convert the DC output to Alternating Current (AC) if needed for applications requiring AC.<\/section>\n","protected":false},"excerpt":{"rendered":"<p>With reference to \u2018fuel cells\u2019 in which hydrogen-rich fuel and oxygen are used to generate electricity, consider the following statements : 1. If pure hydrogen is used as a fuel, the fuel cell emits heat and water as by-products. 2. Fuel cells can be used for powering buildings and not for small devices like laptop &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"With reference to \u2018fuel cells\u2019 in which hydrogen-rich fuel and oxygen\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-fuel-cells-in-which-hydrogen-rich-fuel-and-oxygen\/#more-91328\">Detailed Solution<span class=\"screen-reader-text\">With reference to \u2018fuel cells\u2019 in which hydrogen-rich fuel and oxygen<\/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":[1092],"tags":[1443,1201,1128],"class_list":["post-91328","post","type-post","status-publish","format-standard","hentry","category-upsc-ias","tag-1443","tag-electric-current","tag-physics","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>With reference to \u2018fuel cells\u2019 in which hydrogen-rich fuel and oxygen<\/title>\n<meta name=\"description\" content=\"Only statement 1 is correct. In a hydrogen fuel cell, hydrogen reacts with oxygen to produce electricity, water, and heat. This process is efficient and produces only water and heat as by-products when pure hydrogen is used.\" \/>\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\/with-reference-to-fuel-cells-in-which-hydrogen-rich-fuel-and-oxygen\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"With reference to \u2018fuel cells\u2019 in which hydrogen-rich fuel and oxygen\" \/>\n<meta property=\"og:description\" content=\"Only statement 1 is correct. In a hydrogen fuel cell, hydrogen reacts with oxygen to produce electricity, water, and heat. 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In a hydrogen fuel cell, hydrogen reacts with oxygen to produce electricity, water, and heat. This process is efficient and produces only water and heat as by-products when pure hydrogen is used.","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\/with-reference-to-fuel-cells-in-which-hydrogen-rich-fuel-and-oxygen\/","og_locale":"en_US","og_type":"article","og_title":"With reference to \u2018fuel cells\u2019 in which hydrogen-rich fuel and oxygen","og_description":"Only statement 1 is correct. In a hydrogen fuel cell, hydrogen reacts with oxygen to produce electricity, water, and heat. This process is efficient and produces only water and heat as by-products when pure hydrogen is used.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-fuel-cells-in-which-hydrogen-rich-fuel-and-oxygen\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T10:53:29+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\/with-reference-to-fuel-cells-in-which-hydrogen-rich-fuel-and-oxygen\/","url":"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-fuel-cells-in-which-hydrogen-rich-fuel-and-oxygen\/","name":"With reference to \u2018fuel cells\u2019 in which hydrogen-rich fuel and oxygen","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T10:53:29+00:00","dateModified":"2025-06-01T10:53:29+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Only statement 1 is correct. 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