{"id":85433,"date":"2025-06-01T03:16:41","date_gmt":"2025-06-01T03:16:41","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=85433"},"modified":"2025-06-01T03:16:41","modified_gmt":"2025-06-01T03:16:41","slug":"which-of-the-following-statements-about-volcanoes-are-correct-1-t","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-volcanoes-are-correct-1-t\/","title":{"rendered":"Which of the following statements about volcanoes are correct?\n \n 1. T"},"content":{"rendered":"<p>Which of the following statements about volcanoes are correct?<\/p>\n<ul>\n<li>1. The strength of a volcano is measured by the Volcanic Explosive Index.<\/li>\n<li>2. Iceland and Philippines were created by volcanic activity.<\/li>\n<li>3. Volcanic soils are rich, deep and fertile and allow intensive agriculture to take place.<\/li>\n<\/ul>\n<p>Select the correct answer using the code given below.<\/p>\n<p>[amp_mcq option1=&#8221;1 and 2 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;option4&#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 CDS-1 &#8211; 2023<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-cds-1-2023.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-cds-1-2023\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nLet&#8217;s evaluate each statement:<br \/>\n1.  The strength of a volcano is measured by the Volcanic Explosive Index: The Volcanic Explosivity Index (VEI) is a scale used to measure the relative explosiveness of volcanic eruptions. It is based on factors like the volume of erupted material, height of the eruption column, and duration of the eruption. This statement is correct.<br \/>\n2.  Iceland and Philippines were created by volcanic activity: Iceland is situated on the Mid-Atlantic Ridge, a divergent plate boundary where volcanic activity is frequent, leading to the formation and growth of the island. The Philippines is located in the Pacific Ring of Fire, an area characterized by intense seismic and volcanic activity due to plate tectonics, and its islands are largely volcanic in origin. This statement is correct.<br \/>\n3.  Volcanic soils are rich, deep and fertile and allow intensive agriculture to take place: Soils derived from volcanic ash and lava (Andisols) are generally known for their high fertility due to the presence of minerals and nutrients. They are not always &#8220;deep,&#8221; as depth depends on the age of the soil and the accumulation of organic matter, but their fertility allows for very productive and intensive agriculture in many volcanic regions around the world (e.g., Indonesia, Japan, parts of Italy, Central America). The statement, while potentially slightly overgeneralizing depth, is fundamentally correct regarding the fertility and agricultural potential of volcanic soils. This statement is considered correct in this context.<br \/>\nSince all three statements are correct, the correct option is D.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\n&#8211; VEI measures volcanic eruption strength.<br \/>\n&#8211; Iceland and the Philippines are products of volcanic processes.<br \/>\n&#8211; Volcanic soils are typically fertile and support agriculture.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\n&#8211; Volcanic eruptions can also cause significant destruction through lava flows, ashfall, pyroclastic flows, and lahars.<br \/>\n&#8211; Despite the hazards, volcanic areas attract human settlement due to fertile soils, geothermal energy potential, and mineral deposits.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Which of the following statements about volcanoes are correct? 1. The strength of a volcano is measured by the Volcanic Explosive Index. 2. Iceland and Philippines were created by volcanic activity. 3. Volcanic soils are rich, deep and fertile and allow intensive agriculture to take place. Select the correct answer using the code given below. &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Which of the following statements about volcanoes are correct?\n \n 1. T\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-volcanoes-are-correct-1-t\/#more-85433\">Detailed Solution<span class=\"screen-reader-text\">Which of the following statements about volcanoes are correct?<\/p>\n<p> 1. T<\/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":[1087],"tags":[1105,1209,1106],"class_list":["post-85433","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-1","tag-1105","tag-volcano","tag-world-and-physical-geography","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>Which of the following statements about volcanoes are correct?  1. T<\/title>\n<meta name=\"description\" content=\"Let&#039;s evaluate each statement: 1. The strength of a volcano is measured by the Volcanic Explosive Index: The Volcanic Explosivity Index (VEI) is a scale used to measure the relative explosiveness of volcanic eruptions. It is based on factors like the volume of erupted material, height of the eruption column, and duration of the eruption. This statement is correct. 2. Iceland and Philippines were created by volcanic activity: Iceland is situated on the Mid-Atlantic Ridge, a divergent plate boundary where volcanic activity is frequent, leading to the formation and growth of the island. The Philippines is located in the Pacific Ring of Fire, an area characterized by intense seismic and volcanic activity due to plate tectonics, and its islands are largely volcanic in origin. This statement is correct. 3. Volcanic soils are rich, deep and fertile and allow intensive agriculture to take place: Soils derived from volcanic ash and lava (Andisols) are generally known for their high fertility due to the presence of minerals and nutrients. They are not always &quot;deep,&quot; as depth depends on the age of the soil and the accumulation of organic matter, but their fertility allows for very productive and intensive agriculture in many volcanic regions around the world (e.g., Indonesia, Japan, parts of Italy, Central America). The statement, while potentially slightly overgeneralizing depth, is fundamentally correct regarding the fertility and agricultural potential of volcanic soils. This statement is considered correct in this context. Since all three statements are correct, the correct option is D. - VEI measures volcanic eruption strength. - Iceland and the Philippines are products of volcanic processes. - Volcanic soils are typically fertile and support agriculture.\" \/>\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-of-the-following-statements-about-volcanoes-are-correct-1-t\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which of the following statements about volcanoes are correct?  1. T\" \/>\n<meta property=\"og:description\" content=\"Let&#039;s evaluate each statement: 1. The strength of a volcano is measured by the Volcanic Explosive Index: The Volcanic Explosivity Index (VEI) is a scale used to measure the relative explosiveness of volcanic eruptions. It is based on factors like the volume of erupted material, height of the eruption column, and duration of the eruption. This statement is correct. 2. Iceland and Philippines were created by volcanic activity: Iceland is situated on the Mid-Atlantic Ridge, a divergent plate boundary where volcanic activity is frequent, leading to the formation and growth of the island. The Philippines is located in the Pacific Ring of Fire, an area characterized by intense seismic and volcanic activity due to plate tectonics, and its islands are largely volcanic in origin. This statement is correct. 3. Volcanic soils are rich, deep and fertile and allow intensive agriculture to take place: Soils derived from volcanic ash and lava (Andisols) are generally known for their high fertility due to the presence of minerals and nutrients. They are not always &quot;deep,&quot; as depth depends on the age of the soil and the accumulation of organic matter, but their fertility allows for very productive and intensive agriculture in many volcanic regions around the world (e.g., Indonesia, Japan, parts of Italy, Central America). The statement, while potentially slightly overgeneralizing depth, is fundamentally correct regarding the fertility and agricultural potential of volcanic soils. This statement is considered correct in this context. Since all three statements are correct, the correct option is D. - VEI measures volcanic eruption strength. - Iceland and the Philippines are products of volcanic processes. - Volcanic soils are typically fertile and support agriculture.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-volcanoes-are-correct-1-t\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T03:16:41+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=\"2 minutes\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Which of the following statements about volcanoes are correct?  1. T","description":"Let's evaluate each statement: 1. The strength of a volcano is measured by the Volcanic Explosive Index: The Volcanic Explosivity Index (VEI) is a scale used to measure the relative explosiveness of volcanic eruptions. It is based on factors like the volume of erupted material, height of the eruption column, and duration of the eruption. This statement is correct. 2. Iceland and Philippines were created by volcanic activity: Iceland is situated on the Mid-Atlantic Ridge, a divergent plate boundary where volcanic activity is frequent, leading to the formation and growth of the island. The Philippines is located in the Pacific Ring of Fire, an area characterized by intense seismic and volcanic activity due to plate tectonics, and its islands are largely volcanic in origin. This statement is correct. 3. Volcanic soils are rich, deep and fertile and allow intensive agriculture to take place: Soils derived from volcanic ash and lava (Andisols) are generally known for their high fertility due to the presence of minerals and nutrients. They are not always \"deep,\" as depth depends on the age of the soil and the accumulation of organic matter, but their fertility allows for very productive and intensive agriculture in many volcanic regions around the world (e.g., Indonesia, Japan, parts of Italy, Central America). The statement, while potentially slightly overgeneralizing depth, is fundamentally correct regarding the fertility and agricultural potential of volcanic soils. This statement is considered correct in this context. Since all three statements are correct, the correct option is D. - VEI measures volcanic eruption strength. - Iceland and the Philippines are products of volcanic processes. - Volcanic soils are typically fertile and support agriculture.","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-of-the-following-statements-about-volcanoes-are-correct-1-t\/","og_locale":"en_US","og_type":"article","og_title":"Which of the following statements about volcanoes are correct?  1. T","og_description":"Let's evaluate each statement: 1. The strength of a volcano is measured by the Volcanic Explosive Index: The Volcanic Explosivity Index (VEI) is a scale used to measure the relative explosiveness of volcanic eruptions. It is based on factors like the volume of erupted material, height of the eruption column, and duration of the eruption. This statement is correct. 2. Iceland and Philippines were created by volcanic activity: Iceland is situated on the Mid-Atlantic Ridge, a divergent plate boundary where volcanic activity is frequent, leading to the formation and growth of the island. The Philippines is located in the Pacific Ring of Fire, an area characterized by intense seismic and volcanic activity due to plate tectonics, and its islands are largely volcanic in origin. This statement is correct. 3. Volcanic soils are rich, deep and fertile and allow intensive agriculture to take place: Soils derived from volcanic ash and lava (Andisols) are generally known for their high fertility due to the presence of minerals and nutrients. They are not always \"deep,\" as depth depends on the age of the soil and the accumulation of organic matter, but their fertility allows for very productive and intensive agriculture in many volcanic regions around the world (e.g., Indonesia, Japan, parts of Italy, Central America). The statement, while potentially slightly overgeneralizing depth, is fundamentally correct regarding the fertility and agricultural potential of volcanic soils. This statement is considered correct in this context. Since all three statements are correct, the correct option is D. - VEI measures volcanic eruption strength. - Iceland and the Philippines are products of volcanic processes. - Volcanic soils are typically fertile and support agriculture.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-volcanoes-are-correct-1-t\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T03:16:41+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-volcanoes-are-correct-1-t\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-volcanoes-are-correct-1-t\/","name":"Which of the following statements about volcanoes are correct? 1. T","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T03:16:41+00:00","dateModified":"2025-06-01T03:16:41+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Let's evaluate each statement: 1. The strength of a volcano is measured by the Volcanic Explosive Index: The Volcanic Explosivity Index (VEI) is a scale used to measure the relative explosiveness of volcanic eruptions. It is based on factors like the volume of erupted material, height of the eruption column, and duration of the eruption. This statement is correct. 2. Iceland and Philippines were created by volcanic activity: Iceland is situated on the Mid-Atlantic Ridge, a divergent plate boundary where volcanic activity is frequent, leading to the formation and growth of the island. The Philippines is located in the Pacific Ring of Fire, an area characterized by intense seismic and volcanic activity due to plate tectonics, and its islands are largely volcanic in origin. This statement is correct. 3. Volcanic soils are rich, deep and fertile and allow intensive agriculture to take place: Soils derived from volcanic ash and lava (Andisols) are generally known for their high fertility due to the presence of minerals and nutrients. They are not always \"deep,\" as depth depends on the age of the soil and the accumulation of organic matter, but their fertility allows for very productive and intensive agriculture in many volcanic regions around the world (e.g., Indonesia, Japan, parts of Italy, Central America). The statement, while potentially slightly overgeneralizing depth, is fundamentally correct regarding the fertility and agricultural potential of volcanic soils. This statement is considered correct in this context. Since all three statements are correct, the correct option is D. - VEI measures volcanic eruption strength. - Iceland and the Philippines are products of volcanic processes. - Volcanic soils are typically fertile and support agriculture.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-volcanoes-are-correct-1-t\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-volcanoes-are-correct-1-t\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-about-volcanoes-are-correct-1-t\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC CDS-1","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-cds-1\/"},{"@type":"ListItem","position":3,"name":"Which of the following statements about volcanoes are correct? 1. 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