{"id":86943,"date":"2025-06-01T04:23:58","date_gmt":"2025-06-01T04:23:58","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=86943"},"modified":"2025-06-01T04:23:58","modified_gmt":"2025-06-01T04:23:58","slug":"which-one-of-the-following-statements-is-true-for-nuclear-fission","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-is-true-for-nuclear-fission\/","title":{"rendered":"Which one of the following statements is true for nuclear fission"},"content":{"rendered":"

Which one of the following statements is true for nuclear fission processes?<\/p>\n

[amp_mcq option1=”Light initial nuclides have lesser number of neutrons than protons.” option2=”Heavy initial nuclides have lesser number of neutrons than protons.” option3=”All initial nuclides have larger number of neutrons than protons.” option4=”All initial nuclides have equal number of protons and neutrons.” correct=”option3″]<\/p>\n

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This question was previously asked in<\/div>\n
UPSC Geoscientist – 2022<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nNuclear fission involves the splitting of heavy atomic nuclei, such as isotopes of Uranium or Plutonium. For stable nuclei, as the atomic number (number of protons, Z) increases, the ratio of neutrons (N) to protons increases beyond 1 to compensate for the increasing electrostatic repulsion between protons. Heavy nuclei that undergo fission are located well above the line of stability on an N-Z chart and are typically neutron-rich. For example, Uranium-235 has 92 protons and 143 neutrons (N\/Z \u2248 1.55), and Uranium-238 has 92 protons and 146 neutrons (N\/Z \u2248 1.59). Thus, the heavy initial nuclides involved in fission processes have a larger number of neutrons than protons.
\n<\/section>\n
\n– Fission involves heavy nuclei.
\n– Heavy stable and fissionable nuclei have N > Z.
\n– The neutron-to-proton ratio increases with increasing atomic number for stable nuclei.
\n<\/section>\n
\nThe fission process itself typically releases neutrons. This is because the fission fragments (the lighter nuclei produced) are more stable with a lower N\/Z ratio than the initial heavy nucleus, so excess neutrons are emitted during the process, which can sustain a chain reaction.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following statements is true for nuclear fission processes? [amp_mcq option1=”Light initial nuclides have lesser number of neutrons than protons.” option2=”Heavy initial nuclides have lesser number of neutrons than protons.” option3=”All initial nuclides have larger number of neutrons than protons.” option4=”All initial nuclides have equal number of protons and neutrons.” correct=”option3″] This … <\/p>\n

Detailed SolutionWhich one of the following statements is true for nuclear fission<\/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":[1091],"tags":[1108,1203,1128],"class_list":["post-86943","post","type-post","status-publish","format-standard","hentry","category-upsc-geoscientist","tag-1108","tag-nuclear-physics","tag-physics","no-featured-image-padding"],"yoast_head":"\nWhich one of the following statements is true for nuclear fission<\/title>\n<meta name=\"description\" content=\"Nuclear fission involves the splitting of heavy atomic nuclei, such as isotopes of Uranium or Plutonium. For stable nuclei, as the atomic number (number of protons, Z) increases, the ratio of neutrons (N) to protons increases beyond 1 to compensate for the increasing electrostatic repulsion between protons. Heavy nuclei that undergo fission are located well above the line of stability on an N-Z chart and are typically neutron-rich. For example, Uranium-235 has 92 protons and 143 neutrons (N\/Z \u2248 1.55), and Uranium-238 has 92 protons and 146 neutrons (N\/Z \u2248 1.59). Thus, the heavy initial nuclides involved in fission processes have a larger number of neutrons than protons. - Fission involves heavy nuclei. - Heavy stable and fissionable nuclei have N > Z. - The neutron-to-proton ratio increases with increasing atomic number for stable nuclei.\" \/>\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-statements-is-true-for-nuclear-fission\/\" \/>\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 statements is true for nuclear fission\" \/>\n<meta property=\"og:description\" content=\"Nuclear fission involves the splitting of heavy atomic nuclei, such as isotopes of Uranium or Plutonium. For stable nuclei, as the atomic number (number of protons, Z) increases, the ratio of neutrons (N) to protons increases beyond 1 to compensate for the increasing electrostatic repulsion between protons. Heavy nuclei that undergo fission are located well above the line of stability on an N-Z chart and are typically neutron-rich. For example, Uranium-235 has 92 protons and 143 neutrons (N\/Z \u2248 1.55), and Uranium-238 has 92 protons and 146 neutrons (N\/Z \u2248 1.59). Thus, the heavy initial nuclides involved in fission processes have a larger number of neutrons than protons. - Fission involves heavy nuclei. - Heavy stable and fissionable nuclei have N > Z. - The neutron-to-proton ratio increases with increasing atomic number for stable nuclei.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-is-true-for-nuclear-fission\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T04:23:58+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 statements is true for nuclear fission","description":"Nuclear fission involves the splitting of heavy atomic nuclei, such as isotopes of Uranium or Plutonium. For stable nuclei, as the atomic number (number of protons, Z) increases, the ratio of neutrons (N) to protons increases beyond 1 to compensate for the increasing electrostatic repulsion between protons. Heavy nuclei that undergo fission are located well above the line of stability on an N-Z chart and are typically neutron-rich. For example, Uranium-235 has 92 protons and 143 neutrons (N\/Z \u2248 1.55), and Uranium-238 has 92 protons and 146 neutrons (N\/Z \u2248 1.59). Thus, the heavy initial nuclides involved in fission processes have a larger number of neutrons than protons. - Fission involves heavy nuclei. - Heavy stable and fissionable nuclei have N > Z. - The neutron-to-proton ratio increases with increasing atomic number for stable nuclei.","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-statements-is-true-for-nuclear-fission\/","og_locale":"en_US","og_type":"article","og_title":"Which one of the following statements is true for nuclear fission","og_description":"Nuclear fission involves the splitting of heavy atomic nuclei, such as isotopes of Uranium or Plutonium. 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Thus, the heavy initial nuclides involved in fission processes have a larger number of neutrons than protons. - Fission involves heavy nuclei. - Heavy stable and fissionable nuclei have N > Z. - The neutron-to-proton ratio increases with increasing atomic number for stable nuclei.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-is-true-for-nuclear-fission\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T04:23:58+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-statements-is-true-for-nuclear-fission\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-is-true-for-nuclear-fission\/","name":"Which one of the following statements is true for nuclear fission","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T04:23:58+00:00","dateModified":"2025-06-01T04:23:58+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Nuclear fission involves the splitting of heavy atomic nuclei, such as isotopes of Uranium or Plutonium. 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