{"id":2437,"date":"2025-05-02T12:35:07","date_gmt":"2025-05-02T07:05:07","guid":{"rendered":"https:\/\/lotusarise.com\/qna\/?p=2437"},"modified":"2025-05-02T12:35:08","modified_gmt":"2025-05-02T07:05:08","slug":"q-which-one-of-the-following-is-the-exhaust-pipe-emission-from-fuel-cell-electric-vehicles-powered-by-hydrogen","status":"publish","type":"post","link":"https:\/\/lotusarise.com\/qna\/upsc\/q-which-one-of-the-following-is-the-exhaust-pipe-emission-from-fuel-cell-electric-vehicles-powered-by-hydrogen","title":{"rendered":"Q. Which one of the following is the exhaust Pipe emission from Fuel Cell Electric Vehicles powered by hydrogen?"},"content":{"rendered":"\n<ul class=\"wp-block-list mcq\">\n<li>Hydrogen peroxide<\/li>\n\n\n\n<li>Hydronium<\/li>\n\n\n\n<li>Oxygen<\/li>\n\n\n\n<li>Water vapour<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Answer:&nbsp;(d) Water vapour<\/strong><\/p>\n<\/blockquote>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"fuel-cell-electric-vehicle-fcev\">Fuel Cell Electric Vehicle (FCEV)<\/h5>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fuel Cell Electric Vehicle (FCEV) is a\u00a0<strong>type of electric vehicle that uses a fuel cell to generate electricity from hydrogen, instead of relying on a battery<\/strong>. This electricity then powers an electric motor, driving the vehicle.\n<ul class=\"wp-block-list\">\n<li>FCEVs\u00a0<strong>produce only water vapor as a byproduct, making them a zero-emissions\u00a0<\/strong>alternative to traditional internal combustion engine vehicles.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Mechanism:<\/strong>\u00a0The\u00a0<strong>Fuel Cell Electric Vehicle (FCEV)<\/strong>\u00a0combines hydrogen and oxygen to generate an electric current and\u00a0<strong>water is the only byproduct<\/strong>.\n<ul class=\"wp-block-list\">\n<li><strong>Hydrogen + Oxygen = Electricity + Water Vapour<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>2H<sub>2<\/sub>\u00a0(g) + O<sub>2<\/sub>\u00a0(g) \u2192 2 H<sub>2<\/sub>O (l)<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Fuel Cell Electric Vehicle (FCEV)<\/strong>\u00a0engines are\u00a0<strong>similar to the conventional internal combustion engines<\/strong>\u00a0because they also\u00a0<strong>rely on a constant supply<\/strong>\u00a0of fuel (hydrogen) and oxygen.\n<ul class=\"wp-block-list\">\n<li>However, there are\u00a0<strong>no moving parts<\/strong>\u00a0in the fuel cell, so they are\u00a0<strong>more efficient and reliable<\/strong>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Stationary fuel<\/strong>\u00a0<strong>cells<\/strong>\u00a0are the\u00a0<strong>largest and most powerful<\/strong>\u00a0fuel cells. These are being designed to provide a cleaner, reliable source of on-site power to hospitals, banks, airports and homes.<\/li>\n\n\n\n<li>The successful development of the technology would\u00a0<strong>provide energy for transportation and electric power<\/strong>.<\/li>\n\n\n\n<li><strong>Hydrogen fuel tanks<\/strong>\u00a0are made from\u00a0<strong>highly durable carbon fibre<\/strong>. Some FCEVs have a triple-layer hydrogen tank made of woven carbon fibre.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter is-resized\"><img decoding=\"async\" src=\"https:\/\/lotusarise.com\/wp-content\/uploads\/2025\/04\/Hydrogen-FCEV-1024x588.webp\" alt=\"Hydrogen FCEV\" class=\"wp-image-51782\" style=\"width:790px;height:auto\" title=\"UPSC Prelims Research: Science and Tech 2024 6\"\/><\/figure>\n<\/div>\n\n\n<h6 class=\"wp-block-heading\" id=\"advantages\">Advantages:<\/h6>\n\n\n\n<ul class=\"wp-block-list\">\n<li>FCEVs produce much\u00a0<strong>smaller quantities of\u00a0greenhouse gases<\/strong>\u00a0and none of the air pollutants that cause health problems.<\/li>\n\n\n\n<li>Fuel cells\u00a0<strong>emit only heat and water as a byproduct<\/strong>\u00a0and are\u00a0<strong>far more energy-efficient<\/strong>\u00a0than traditional combustion technologies.<\/li>\n\n\n\n<li>FCEVs\u00a0<strong>do not need to be plugged in for charging<\/strong>, like battery-powered EVs.<\/li>\n\n\n\n<li>There is a\u00a0<strong>wide availability of resources for producing hydrogen<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"disadvantages\">Disadvantages:<\/h6>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The\u00a0<strong>process of making hydrogen needs energy<\/strong>, often from\u00a0<strong>fossil fuel<\/strong>\u00a0sources, which raises questions over hydrogen\u2019s green credentials.<\/li>\n\n\n\n<li>Handling of hydrogen is a safety concern because it is<strong>\u00a0more explosive<\/strong>\u00a0than petrol.<\/li>\n\n\n\n<li>These vehicles are expensive and fuel dispensing pumps are scarce.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Answer:&nbsp;(d) Water vapour Fuel Cell Electric Vehicle (FCEV) Advantages: Disadvantages:<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[1,3],"tags":[44],"years":[49],"class_list":["post-2437","post","type-post","status-publish","format-standard","hentry","category-upsc","category-prelims","tag-science-and-tech","years-49"],"acf":[],"taxonomy_info":{"category":[{"value":1,"label":"UPSC"},{"value":3,"label":"Prelims"}],"post_tag":[{"value":44,"label":"Science and Tech"}],"years":[{"value":49,"label":"2024"}]},"featured_image_src_large":false,"author_info":{"display_name":"LotusArise","author_link":"https:\/\/lotusarise.com\/qna\/author\/team-lotusarise"},"comment_info":0,"category_info":[{"term_id":1,"name":"UPSC","slug":"upsc","term_group":0,"term_taxonomy_id":1,"taxonomy":"category","description":"","parent":0,"count":1269,"filter":"raw","cat_ID":1,"category_count":1269,"category_description":"","cat_name":"UPSC","category_nicename":"upsc","category_parent":0},{"term_id":3,"name":"Prelims","slug":"prelims","term_group":0,"term_taxonomy_id":3,"taxonomy":"category","description":"","parent":1,"count":1251,"filter":"raw","cat_ID":3,"category_count":1251,"category_description":"","cat_name":"Prelims","category_nicename":"prelims","category_parent":1}],"tag_info":[{"term_id":44,"name":"Science and Tech","slug":"science-and-tech","term_group":0,"term_taxonomy_id":44,"taxonomy":"post_tag","description":"","parent":0,"count":167,"filter":"raw"}],"_links":{"self":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/2437","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/comments?post=2437"}],"version-history":[{"count":0,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/2437\/revisions"}],"wp:attachment":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/media?parent=2437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/categories?post=2437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/tags?post=2437"},{"taxonomy":"years","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/years?post=2437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}