{"id":86936,"date":"2025-06-01T04:23:51","date_gmt":"2025-06-01T04:23:51","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=86936"},"modified":"2025-06-01T04:23:51","modified_gmt":"2025-06-01T04:23:51","slug":"which-one-of-the-following-events-has-not-been-attributed-to-el-nino","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-events-has-not-been-attributed-to-el-nino\/","title":{"rendered":"Which one of the following events has not been attributed to El Ni\u00f1o"},"content":{"rendered":"

Which one of the following events has not<\/i> been attributed to El Ni\u00f1o during early 1980s?<\/p>\n

[amp_mcq option1=”The warmest winter in the Eastern US during the last 25 years” option2=”Drought in Southeast Africa, Australia, New Zealand and Southeast Asia” option3=”Prolific growth of coral reefs in the Pacific Ocean” option4=”Increased incidents of bubonic plague in Southwestern United States” correct=”option3″]<\/p>\n

\n
\n
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
\nEl Ni\u00f1o is associated with warming of the central and eastern tropical Pacific Ocean waters. This warming typically leads to coral bleaching, a stress response where corals expel their symbiotic algae (zooxanthellae), causing them to turn white and often die if the stress is prolonged. Therefore, prolific growth of coral reefs is not an effect attributed to El Ni\u00f1o; rather, coral bleaching and potential mortality are common consequences of the associated ocean warming. The early 1980s (specifically 1982-83) saw a significant El Ni\u00f1o event with widespread climate impacts.
\n<\/section>\n
\n– El Ni\u00f1o warms ocean surface waters in the Pacific.
\n– Ocean warming causes coral bleaching, not prolific growth.
\n– Droughts in certain regions (like Australia, parts of Africa, Southeast Asia) and altered temperature patterns are typical El Ni\u00f1o effects.
\n<\/section>\n
\nEl Ni\u00f1o-Southern Oscillation (ENSO) is a major climate pattern involving variations in the temperature of the surface of the tropical eastern Pacific Ocean and in the air pressure over the tropical western Pacific. It has three phases: El Ni\u00f1o (warm phase), La Ni\u00f1a (cool phase), and Neutral. The 1982-83 El Ni\u00f1o event was particularly strong and well-documented for its global impacts.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following events has not been attributed to El Ni\u00f1o during early 1980s? [amp_mcq option1=”The warmest winter in the Eastern US during the last 25 years” option2=”Drought in Southeast Africa, Australia, New Zealand and Southeast Asia” option3=”Prolific growth of coral reefs in the Pacific Ocean” option4=”Increased incidents of bubonic plague in Southwestern … <\/p>\n

Detailed SolutionWhich one of the following events has not been attributed to El Ni\u00f1o<\/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":[1108,1106,1135],"class_list":["post-86936","post","type-post","status-publish","format-standard","hentry","category-upsc-geoscientist","tag-1108","tag-world-and-physical-geography","tag-world-climate","no-featured-image-padding"],"yoast_head":"\nWhich one of the following events has not been attributed to El Ni\u00f1o<\/title>\n<meta name=\"description\" content=\"El Ni\u00f1o is associated with warming of the central and eastern tropical Pacific Ocean waters. This warming typically leads to coral bleaching, a stress response where corals expel their symbiotic algae (zooxanthellae), causing them to turn white and often die if the stress is prolonged. Therefore, prolific growth of coral reefs is not an effect attributed to El Ni\u00f1o; rather, coral bleaching and potential mortality are common consequences of the associated ocean warming. The early 1980s (specifically 1982-83) saw a significant El Ni\u00f1o event with widespread climate impacts. - El Ni\u00f1o warms ocean surface waters in the Pacific. - Ocean warming causes coral bleaching, not prolific growth. - Droughts in certain regions (like Australia, parts of Africa, Southeast Asia) and altered temperature patterns are typical El Ni\u00f1o effects.\" \/>\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-events-has-not-been-attributed-to-el-nino\/\" \/>\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 events has not been attributed to El Ni\u00f1o\" \/>\n<meta property=\"og:description\" content=\"El Ni\u00f1o is associated with warming of the central and eastern tropical Pacific Ocean waters. This warming typically leads to coral bleaching, a stress response where corals expel their symbiotic algae (zooxanthellae), causing them to turn white and often die if the stress is prolonged. Therefore, prolific growth of coral reefs is not an effect attributed to El Ni\u00f1o; rather, coral bleaching and potential mortality are common consequences of the associated ocean warming. The early 1980s (specifically 1982-83) saw a significant El Ni\u00f1o event with widespread climate impacts. - El Ni\u00f1o warms ocean surface waters in the Pacific. - Ocean warming causes coral bleaching, not prolific growth. - Droughts in certain regions (like Australia, parts of Africa, Southeast Asia) and altered temperature patterns are typical El Ni\u00f1o effects.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-events-has-not-been-attributed-to-el-nino\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T04:23:51+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 events has not been attributed to El Ni\u00f1o","description":"El Ni\u00f1o is associated with warming of the central and eastern tropical Pacific Ocean waters. This warming typically leads to coral bleaching, a stress response where corals expel their symbiotic algae (zooxanthellae), causing them to turn white and often die if the stress is prolonged. Therefore, prolific growth of coral reefs is not an effect attributed to El Ni\u00f1o; rather, coral bleaching and potential mortality are common consequences of the associated ocean warming. The early 1980s (specifically 1982-83) saw a significant El Ni\u00f1o event with widespread climate impacts. - El Ni\u00f1o warms ocean surface waters in the Pacific. - Ocean warming causes coral bleaching, not prolific growth. - Droughts in certain regions (like Australia, parts of Africa, Southeast Asia) and altered temperature patterns are typical El Ni\u00f1o effects.","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-events-has-not-been-attributed-to-el-nino\/","og_locale":"en_US","og_type":"article","og_title":"Which one of the following events has not been attributed to El Ni\u00f1o","og_description":"El Ni\u00f1o is associated with warming of the central and eastern tropical Pacific Ocean waters. This warming typically leads to coral bleaching, a stress response where corals expel their symbiotic algae (zooxanthellae), causing them to turn white and often die if the stress is prolonged. Therefore, prolific growth of coral reefs is not an effect attributed to El Ni\u00f1o; rather, coral bleaching and potential mortality are common consequences of the associated ocean warming. The early 1980s (specifically 1982-83) saw a significant El Ni\u00f1o event with widespread climate impacts. - El Ni\u00f1o warms ocean surface waters in the Pacific. - Ocean warming causes coral bleaching, not prolific growth. - Droughts in certain regions (like Australia, parts of Africa, Southeast Asia) and altered temperature patterns are typical El Ni\u00f1o effects.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-events-has-not-been-attributed-to-el-nino\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T04:23:51+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-events-has-not-been-attributed-to-el-nino\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-events-has-not-been-attributed-to-el-nino\/","name":"Which one of the following events has not been attributed to El Ni\u00f1o","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T04:23:51+00:00","dateModified":"2025-06-01T04:23:51+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"El Ni\u00f1o is associated with warming of the central and eastern tropical Pacific Ocean waters. This warming typically leads to coral bleaching, a stress response where corals expel their symbiotic algae (zooxanthellae), causing them to turn white and often die if the stress is prolonged. Therefore, prolific growth of coral reefs is not an effect attributed to El Ni\u00f1o; rather, coral bleaching and potential mortality are common consequences of the associated ocean warming. The early 1980s (specifically 1982-83) saw a significant El Ni\u00f1o event with widespread climate impacts. - El Ni\u00f1o warms ocean surface waters in the Pacific. - Ocean warming causes coral bleaching, not prolific growth. - Droughts in certain regions (like Australia, parts of Africa, Southeast Asia) and altered temperature patterns are typical El Ni\u00f1o effects.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-events-has-not-been-attributed-to-el-nino\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-events-has-not-been-attributed-to-el-nino\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-events-has-not-been-attributed-to-el-nino\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC Geoscientist","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-geoscientist\/"},{"@type":"ListItem","position":3,"name":"Which one of the following events has not been attributed to El Ni\u00f1o"}]},{"@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\/86936","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=86936"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/86936\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=86936"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=86936"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=86936"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}