{"id":3644,"date":"2023-01-04T06:08:37","date_gmt":"2023-01-04T06:08:37","guid":{"rendered":"https:\/\/8thclass.deltapublications.in\/?page_id=3644"},"modified":"2024-12-23T10:15:33","modified_gmt":"2024-12-23T10:15:33","slug":"s-5-a-coal","status":"publish","type":"page","link":"https:\/\/8thclass.deltapublications.in\/index.php\/s-5-a-coal\/","title":{"rendered":"s-5.a Coal"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color has-link-color wp-elements-a4a932e87a15d9335154d0fbcca39247\" style=\"color:#00056d;text-transform:uppercase\"><strong>Coal <\/strong><\/h2>\n\n\n\n<p class=\"has-text-color has-link-color has-huge-font-size wp-elements-aae0d72b0df05b1a7d05750bd97517d2\" style=\"color:#74008b\"><strong>Key Notes :<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"631\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/11\/3425310d44db99b5467b68358b88a482-1-1-1024x631.gif\" alt=\"\" class=\"wp-image-12564\" style=\"width:391px;height:auto\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/11\/3425310d44db99b5467b68358b88a482-1-1-1024x631.gif 1024w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/11\/3425310d44db99b5467b68358b88a482-1-1-300x185.gif 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/11\/3425310d44db99b5467b68358b88a482-1-1-768x473.gif 768w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/11\/3425310d44db99b5467b68358b88a482-1-1-1536x947.gif 1536w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/11\/3425310d44db99b5467b68358b88a482-1-1-1568x966.gif 1568w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-217703af8f4909a2b7a91bf720442d07\" style=\"color:#000060\"><strong>Definition of Coal<\/strong>:<\/p>\n\n\n\n<p class=\"has-large-font-size\">Coal is a black or brownish-black sedimentary rock that is primarily composed of carbon along with various other elements like hydrogen, sulfur, oxygen, and nitrogen.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-3cd76df2fe28319e40288defbb874f02\" style=\"color:#000060\"><strong>Formation of Coal<\/strong>:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"430\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-145.png\" alt=\"\" class=\"wp-image-18830\" style=\"width:490px;height:auto\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-145.png 700w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-145-300x184.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Coal is formed from the remains of ancient plants that lived millions of years ago.<\/li>\n\n\n\n<li>These plant remains were buried under layers of soil and rock, subjected to heat and pressure over time, and transformed into coal.<\/li>\n\n\n\n<li>This process is called <strong>carbonization<\/strong>.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-a3be48b7d9abd759d06b807294ba9ecc\" style=\"color:#000060\"><strong>Types of Coal<\/strong>:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-146.png\" alt=\"\" class=\"wp-image-18831\" style=\"width:461px;height:auto\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-146.png 800w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-146-300x188.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2024\/11\/image-146-768x480.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure><\/div>\n\n\n<p class=\"has-large-font-size\">Coal is classified into four main types based on carbon content and usage:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Anthracite<\/strong>: The highest carbon content and most efficient.<\/li>\n\n\n\n<li><strong>Bituminous<\/strong>: Used for electricity generation and industry.<\/li>\n\n\n\n<li><strong>Sub-bituminous<\/strong>: Lower carbon content and heating value.<\/li>\n\n\n\n<li><strong>Lignite<\/strong>: Least carbon content, used in electricity generation.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-6ab73245d5a1cdb24af7088e100ceedf\" style=\"color:#000060\"><strong>Uses of Coal<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Fuel<\/strong>: Used in thermal power plants to generate electricity.<\/li>\n\n\n\n<li><strong>Industrial Usage<\/strong>: Utilized in steel production and cement manufacturing.<\/li>\n\n\n\n<li><strong>By-products<\/strong>: Produces coke, coal tar, and coal gas.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-b3175e792aadc256ab9dcd09804e084f\" style=\"color:#000060\"><strong>Environmental Impact<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Burning coal releases greenhouse gases like carbon dioxide, contributing to global warming.<\/li>\n\n\n\n<li>Mining coal can lead to deforestation, habitat destruction, and pollution.<\/li>\n\n\n\n<li>Acid rain can occur due to sulfur dioxide emissions from coal combustion.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-2e49d85003bd8ab4c0b781aeb35af9fb\" style=\"color:#000060\"><strong>Coal Mining Methods<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Surface Mining<\/strong>: Extracting coal from the earth&#8217;s surface.<\/li>\n\n\n\n<li><strong>Underground Mining<\/strong>: Accessing coal deposits deep within the earth.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-3224e394991ffa0f3042f75142a1de4c\" style=\"color:#000060\"><strong>Alternative Energy Sources<\/strong>:<\/p>\n\n\n\n<p class=\"has-large-font-size\">As coal contributes to pollution, renewable energy sources like solar, wind, and hydropower are promoted as alternatives.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-3885b4769fce2864dea16a0e3eab316d\" style=\"color:#000060\"><strong>Future of Coal<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>With increasing awareness about environmental issues, the reliance on coal is decreasing.<\/li>\n\n\n\n<li>Focus is shifting towards clean coal technologies and sustainable energy practices.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\"><strong>Let&#8217;s Practice!<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/76051\/484\/116\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-2-1.png\" alt=\"\" class=\"wp-image-7015\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-2-1.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-2-1-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-2-1-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/81572\/515\/816\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-1-1-1.png\" alt=\"\" class=\"wp-image-7016\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-1-1-1.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-1-1-1-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-1-1-1-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Coal Key Notes : Definition of Coal: Coal is a black or brownish-black sedimentary rock that is primarily composed of carbon along with various other elements like hydrogen, sulfur, oxygen, and nitrogen. Formation of Coal: Types of Coal: Coal is classified into four main types based on carbon content and usage: Uses of Coal: Environmental<a class=\"more-link\" href=\"https:\/\/8thclass.deltapublications.in\/index.php\/s-5-a-coal\/\">Continue reading <span class=\"screen-reader-text\">&#8220;s-5.a Coal&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-3644","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_hostinger_reach_plugin_has_subscription_block":false,"_hostinger_reach_plugin_is_elementor":false,"_links":{"self":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3644","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3644"}],"version-history":[{"count":59,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3644\/revisions"}],"predecessor-version":[{"id":19427,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3644\/revisions\/19427"}],"wp:attachment":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}