{"id":3648,"date":"2023-01-02T05:18:43","date_gmt":"2023-01-02T05:18:43","guid":{"rendered":"https:\/\/theexampillar.com\/ncert\/?p=3648"},"modified":"2023-01-31T07:01:38","modified_gmt":"2023-01-31T07:01:38","slug":"ncert-solutions-class-8-science-chapter-5-coal-and-petroleum","status":"publish","type":"post","link":"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-science-chapter-5-coal-and-petroleum\/","title":{"rendered":"NCERT Solutions Class 8 Science Chapter 5 Coal and Petroleum"},"content":{"rendered":"<h2 style=\"text-align: center;\"><span style=\"color: #000000; font-family: georgia, palatino, serif;\">NCERT Solutions Class 8 Science\u00a0<\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"color: #000000; font-family: georgia, palatino, serif;\">The NCERT Solutions in English Language for Class 8 Science <strong>Chapter &#8211; 5 (Coal and Petroleum) <\/strong>has been provided here to help the students in solving the questions from this exercise.<\/span><\/p>\n<h2 style=\"text-align: center;\"><span style=\"color: #000000; font-family: georgia, palatino, serif;\">Chapter &#8211; 5 (Coal and Petroleum)<\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>1. What are the advantages of using CNG and LPG as fuels?<br \/>\n<\/strong><\/span><strong style=\"color: #000000;\">Answer &#8211; <\/strong><span style=\"color: #000000;\">The advantages of using compressed natural gas (CNG) and liquified petroleum gas (LPG) as fuels are:<\/span><\/p>\n<ul>\n<li style=\"text-align: justify;\"><span style=\"color: #000000;\">They can be burnt directly. <\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"color: #000000;\">They can be transported easily through pipelines. <\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"color: #000000;\">They are clean fuels and do not give smoke when burnt. <\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"color: #000000;\">They give a lot of heat energy when burnt.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>2. Name the petroleum product used for surfacing of roads.<br \/>\n<\/strong><\/span><strong style=\"color: #000000;\">Answer &#8211;\u00a0 <\/strong><span style=\"color: #000000;\">Bitumen, a petroleum product, is used for surfacing roads.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>3. Describe how coal is formed from dead vegetation. What is this process called?<br \/>\n<\/strong><\/span><strong style=\"color: #000000;\">Answer &#8211;\u00a0 <\/strong><span style=\"color: #000000;\">Millions of years ago, there were dense forests on earth in low lying areas Due to floods, earthquakes, volcanoes, etc., the forest got buried in soil As more and more soil deposited over them, they sank deeper Due to high temperature and pressure inside the earth, and the due to no air inside the earth, the dead plants and trees got slowly converted into coal. This process of conversion of dead plants and trees into Carbon is called <\/span><strong style=\"color: #000000;\">Carbonization.<\/strong><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>4. Fill in the blanks.<br \/>\n<\/strong><strong>(a)<\/strong> Fossil fuels are\u00a0 ____________,\u00a0 ____________, and ____________ .<br \/>\n<strong>(b)<\/strong> The process of separation of different constituents from petroleum is called _____________ .<br \/>\n<strong>(c)<\/strong> The least polluting fuel for a vehicle is ______________ .<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;<br \/>\n<\/strong><strong>(a)<\/strong> Fossil fuels\u00a0<strong><span style=\"text-decoration: underline;\">Coal<\/span>, <span style=\"text-decoration: underline;\">Petroleum<\/span><\/strong>, and\u00a0<span style=\"text-decoration: underline;\"><strong>natural gas<\/strong><\/span>.<br \/>\n<strong>(b)<\/strong> The process of separation of different constituents from petroleum is called\u00a0<span style=\"text-decoration: underline;\"><strong>refining<\/strong><\/span>.<br \/>\n<strong>(c)<\/strong> The least polluting fuel for a vehicle is\u00a0<strong><span style=\"text-decoration: underline;\">Compressed Natural Gas (CNG)<\/span>.<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>5. Tick True\/False against the following statements.<br \/>\n<\/strong><strong>(a)<\/strong> Fossil fuels can be made in the laboratory. (T\/F)<br \/>\n<strong>(b)<\/strong> CNG is a more polluting fuel than petrol. (T\/F)<br \/>\n<strong>(c)<\/strong> Coke is the most pure form of carbon. (T\/F)<br \/>\n<strong>(d)<\/strong> Coal tar is a mixture of various substances. (T\/F)<br \/>\n<strong>(e)<\/strong> Kerosene is not a fossil fuel. (T\/F)<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211; <\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(a)<\/strong> Fossil fuels can be made in the laboratory. <strong>(False)<\/strong><br \/>\n<strong>(b)<\/strong> CNG is a more polluting fuel than petrol. <strong>(False)<\/strong><br \/>\n<strong>(c)<\/strong> Coke is the most pure form of carbon. <strong>(True)<\/strong><br \/>\n<strong>(d)<\/strong> Coal tar is a mixture of various substances. <strong>(True)<\/strong><br \/>\n<strong>(e)<\/strong> Kerosene is not a fossil fuel. <strong>(False)<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>6. Explain why fossil fuels are exhaustible natural resources.<br \/>\n<\/strong><\/span><strong style=\"color: #000000;\">Answer &#8211;\u00a0 <\/strong><span style=\"color: #000000;\">Fossil fuels require millions of years to form from the dead vegetation and animals that get buried deep inside the Earth. They require high temperature and pressure for their formation, which cannot be provided in the laboratory. Thus, fossils are limited. Therefore, the use of fossil fuels at this rate will lead to their exhaustion.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>7. Describe the characteristics and uses of coke.<br \/>\n<\/strong><\/span><strong style=\"color: #000000;\">Answer &#8211; <\/strong><span style=\"color: #000000;\">Characteristics of coke are:<\/span><\/p>\n<ul>\n<li style=\"text-align: justify;\"><span style=\"color: #000000;\">Tough <\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"color: #000000;\">Porous <\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"color: #000000;\">Black in colour<br \/>\n<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\"><strong>Uses of coke:<\/strong> <\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">In manufacture of steel. <\/span><\/li>\n<li><span style=\"color: #000000;\">In the extraction of metals (as a reducing agent).<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>8. Explain the process of the formation of petroleum.<br \/>\n<\/strong><\/span><strong style=\"color: #000000;\">Answer &#8211;\u00a0 <\/strong><span style=\"color: #000000;\">Petroleum was formed from dead organisms that got buried in the sea millions of years ago. These dead bodies got covered with layers of sand and clay. Lack of air, high temperature, and high pressure transformed these dead organisms into petroleum and natural gas.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>9. The following table shows the total power shortage in India from 1993\u20131999. Show the data in the form of a graph. Plot shortage percentage for the years on the Y-axis and the year on the X-axis.<\/strong><\/span><\/p>\n<div class=\"table-responsive\" style=\"text-align: justify;\">\n<table class=\"table table-bordered\">\n<tbody>\n<tr>\n<td><span style=\"color: #000000;\"><strong>S.No.<\/strong><\/span><\/td>\n<td><span style=\"color: #000000;\"><strong>Year<\/strong><\/span><\/td>\n<td><span style=\"color: #000000;\"><strong>Shortage (%)<\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">1.<\/span><\/td>\n<td><span style=\"color: #000000;\">1993<\/span><\/td>\n<td><span style=\"color: #000000;\">7.7<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">2.<\/span><\/td>\n<td><span style=\"color: #000000;\">1994<\/span><\/td>\n<td><span style=\"color: #000000;\">7.5<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">3.<\/span><\/td>\n<td><span style=\"color: #000000;\">1995<\/span><\/td>\n<td><span style=\"color: #000000;\">8.2<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">4.<\/span><\/td>\n<td><span style=\"color: #000000;\">1996<\/span><\/td>\n<td><span style=\"color: #000000;\">7.1<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">5.<\/span><\/td>\n<td><span style=\"color: #000000;\">1997<\/span><\/td>\n<td><span style=\"color: #000000;\">7.7<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">6.<\/span><\/td>\n<td><span style=\"color: #000000;\">1998<\/span><\/td>\n<td><span style=\"color: #000000;\">9.1<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">7.<\/span><\/td>\n<td><span style=\"color: #000000;\">1999<\/span><\/td>\n<td><span style=\"color: #000000;\">11.2<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3690\" src=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Science-Ch-5-Ans-9.jpg\" alt=\"NCERT Class 8 Solutions Science \" width=\"771\" height=\"790\" srcset=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Science-Ch-5-Ans-9.jpg 968w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Science-Ch-5-Ans-9-293x300.jpg 293w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Science-Ch-5-Ans-9-768x787.jpg 768w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Science-Ch-5-Ans-9-480x492.jpg 480w\" sizes=\"auto, (max-width: 771px) 100vw, 771px\" \/><br \/>\n<\/strong><\/span><\/p>\n<p>&nbsp;<\/p>\n<table style=\"width: 100%; border-collapse: collapse;\" border=\"1\">\n<tbody>\n<tr style=\"height: 32px;\">\n<td style=\"width: 100%; background-color: #f2e079; text-align: center; height: 32px;\"><span style=\"color: #ff0000; font-size: 14pt;\"><strong>NCERT Class 8<sup>th\u00a0<\/sup>Solution\u00a0<\/strong><\/span><\/td>\n<\/tr>\n<tr style=\"height: 28px;\">\n<td style=\"width: 100%; text-align: left; height: 28px;\"><span style=\"font-size: 14pt;\"><strong><span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-english\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cNCERT Solutions Class 6 English\u201d (Edit)\">NCERT Solutions Class 8 English<\/a><\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr style=\"height: 28px;\">\n<td style=\"width: 100%; text-align: left; height: 28px;\"><span style=\"font-size: 14pt;\"><strong><span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-hindi\/\" aria-label=\"\u201cNCERT Solutions Class 6 Maths\u201d (Edit)\">NCERT Solutions Class 8 Hindi<\/a><\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr style=\"height: 28px;\">\n<td style=\"width: 100%; text-align: left; height: 28px;\"><span style=\"font-size: 14pt;\"><strong><span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-maths\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cNCERT Solutions Class 6 Maths\u201d (Edit)\">NCERT Solutions Class 8 Mathematics<\/a>\u00a0<\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr style=\"height: 28px;\">\n<td style=\"width: 100%; text-align: left; height: 28px;\"><a href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-sanskrit-ruchira\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-size: 14pt;\"><strong><span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\">NCERT Solutions Class 8 Sanskrit<\/span><\/strong><\/span><\/a><\/td>\n<\/tr>\n<tr style=\"height: 28px;\">\n<td style=\"width: 100%; text-align: left; height: 28px;\"><span style=\"font-size: 14pt;\"><strong><span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-science\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cNCERT Solutions Class 6 Social Science\u201d (Edit)\">NCERT Solutions Class 8 Science<\/a><\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr style=\"height: 28px;\">\n<td style=\"width: 100%; text-align: left; height: 28px;\"><span style=\"font-size: 14pt;\"><strong><span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-social-science\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cNCERT Solutions Class 6 Social Science\u201d (Edit)\">NCERT Solutions Class 8 Social Science<\/a><\/span><\/strong><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>NCERT Solutions Class 8 Science\u00a0 The NCERT Solutions in English Language for Class 8 Science Chapter &#8211; 5 (Coal and Petroleum) has been provided here to help the students in solving the questions from this exercise. Chapter &#8211; 5 (Coal and Petroleum) 1. What are the advantages of using CNG and LPG as fuels? Answer [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[535],"tags":[545,546,538,5],"class_list":["post-3648","post","type-post","status-publish","format-standard","hentry","category-class-8-science","tag-ncert-class-8-science-chapter-5-coal-and-petroleum-in-english","tag-ncert-solutions-class-8-science-chapter-5-in-english","tag-ncert-solutions-class-8-science-in-english","tag-ncert-solutions-in-english"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.9 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>NCERT Solutions Class 8 Science Chapter 5 Coal and Petroleum | TheExamPillar NCERT<\/title>\n<meta name=\"description\" content=\"NCERT Solutions Class 8 Science\u00a0The NCERT Solutions in English Language for Class 8 Science Chapter - 5 (Coal and Petroleum) has been provided here to help the students in solving the questions from this exercise.Chapter - 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