{"id":22877,"date":"2024-04-15T06:26:15","date_gmt":"2024-04-15T06:26:15","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=22877"},"modified":"2024-04-15T06:26:15","modified_gmt":"2024-04-15T06:26:15","slug":"a-nuclear-reactor-is-said-to-have-become-critical-when-a-it-stops-due-to-malfunctioning-b-it-starts-emitting-dangerous-radioactive-radiations-c-it-is-shut-down-to-avoid-explosion-d-it-is-ready","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/a-nuclear-reactor-is-said-to-have-become-critical-when-a-it-stops-due-to-malfunctioning-b-it-starts-emitting-dangerous-radioactive-radiations-c-it-is-shut-down-to-avoid-explosion-d-it-is-ready\/","title":{"rendered":"A nuclear reactor is said to have become &#8216;critical&#8217; when A. It stops due to malfunctioning B. It starts emitting dangerous radioactive radiations C. It is shut down to avoid explosion D. It is ready to produce controlled energy"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;It stops due to malfunctioning&#8221; option2=&#8221;It starts emitting dangerous radioactive radiations&#8221; option3=&#8221;It is shut down to avoid explosion&#8221; option4=&#8221;It is ready to produce controlled energy&#8221; correct=&#8221;option4&#8243;]<!--more--><\/p>\n<p>The correct answer is: D. It is ready to produce controlled energy.<\/p>\n<p>A nuclear reactor is said to have become &#8220;critical&#8221; when the rate of nuclear fission in the reactor is self-sustaining. This means that the number of neutrons produced by fission is equal to the number of neutrons absorbed by the fuel. When a reactor is critical, it is producing a steady stream of heat, which can be used to generate electricity.<\/p>\n<p>Option A is incorrect because a nuclear reactor does not stop due to malfunctioning when it becomes critical. In fact, the opposite is true: a nuclear reactor becomes critical when it is operating correctly.<\/p>\n<p>Option B is incorrect because a nuclear reactor does not start emitting dangerous radioactive radiations when it becomes critical. In fact, the amount of radiation produced by a nuclear reactor is actually quite low when it is operating correctly.<\/p>\n<p>Option C is incorrect because a nuclear reactor is not shut down to avoid explosion when it becomes critical. In fact, a nuclear reactor is only shut down if there is a problem with the reactor, such as a loss of coolant.<\/p>\n<p>I hope this helps! Let me know if you have any other questions.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;It stops due to malfunctioning&#8221; option2=&#8221;It starts emitting dangerous radioactive radiations&#8221; option3=&#8221;It is shut down to avoid explosion&#8221; option4=&#8221;It is ready to produce controlled energy&#8221; correct=&#8221;option4&#8243;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[],"class_list":["post-22877","post","type-post","status-publish","format-standard","hentry","category-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>A nuclear reactor is said to have become &#039;critical&#039; when A. It stops due to malfunctioning B. It starts emitting dangerous radioactive radiations C. It is shut down to avoid explosion D. It is ready to produce controlled energy<\/title>\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\/a-nuclear-reactor-is-said-to-have-become-critical-when-a-it-stops-due-to-malfunctioning-b-it-starts-emitting-dangerous-radioactive-radiations-c-it-is-shut-down-to-avoid-explosion-d-it-is-ready\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A nuclear reactor is said to have become &#039;critical&#039; when A. It stops due to malfunctioning B. It starts emitting dangerous radioactive radiations C. It is shut down to avoid explosion D. It is ready to produce controlled energy\" \/>\n<meta property=\"og:description\" content=\"[amp_mcq option1=&#8221;It stops due to malfunctioning&#8221; option2=&#8221;It starts emitting dangerous radioactive radiations&#8221; option3=&#8221;It is shut down to avoid explosion&#8221; option4=&#8221;It is ready to produce controlled energy&#8221; correct=&#8221;option4&#8243;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/a-nuclear-reactor-is-said-to-have-become-critical-when-a-it-stops-due-to-malfunctioning-b-it-starts-emitting-dangerous-radioactive-radiations-c-it-is-shut-down-to-avoid-explosion-d-it-is-ready\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-15T06:26:15+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":"A nuclear reactor is said to have become 'critical' when A. 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