NCERT Solutions for Class 8 Science Chapter 5: Check PDF
NCERT Solutions For Class 8 Science Chapter 5 – Coal And Petroleum: In this article, we will provide you with Class 8 Solutions for Science Chapter 5 – Coal and Petroleum. All in-text and exercise questions from the chapter have been solved by academic experts at Embibe in an easy and simple language that will help students understand the concepts better.
Students can refer to these Class 8 Science NCERT Solutions to solve their assignments and homework on time. Also, students can download them for free and make use of them in offline mode. Students will be able to revise the chapter quickly before the exam. So, check out the Class 8 NCERT Solutions for Science subject Chapter 5.
CBSE NCERT Solutions For Class 8 Science Chapter 5: Coal And Petroleum
We have provided here the NCERT Solutions for the class 8 science chapter 5 along with a direct link to the NCERT solutions for class 8 science chapter 5 extra questions PDF download free to help the students prepare well for the exam. Finding the right solutions usually turns into a gruelling task with a plethora of links available on the Internet.
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Students can download the CBSE Class 8 Science Solutions for Chapter 5 Coal and Petroleum exercise-wise PDF from the following table:
CBSE NCERT Solutions For Class 8 Science Chapter 5 PDF
The Class 8 NCERT Solutions for Science will help students complete their assignments and homework on time. These solutions for CBSE Class 8 Science Chapter 5 will further help students understand the related concepts better.
NCERT Solutions For Class 8 Science Chapter 5: Chapter Summary
There are various types of resources found in nature. These resources can be broadly classified as :
(i) Inexhaustible Resources: These resources are present in abundant quantity in nature. They are not likely to be exhausted by human activities. For example sunlight, air, and water.
(ii) Exhaustible Resources: These resources are present in limited quantity in nature. They can be exhausted by human activities. For example coal, petroleum, natural gas, etc.
Coal: It is a hard substance that is black in colour. It is used as fuel for cooking food. It is used in thermal power plants to generate electricity. It is also used in several industries as fuel.
Coke: It is a tough, porous substance that is almost the purest form of carbon. It is used in the extraction of steel and in the extraction of many metals.
Coal Tar: It is a thick black liquid with an unpleasant smell. It is a mixture of about 200 substances. Products obtained from it are used for manufacturing substances like drugs, explosives, paints, plastics, perfumes, etc.
Coal Gas: It is obtained during the processing of coal to get coke. It is used as a fuel in many industries.
Petroleum: Petrol and diesel used as fuel in motor vehicles are obtained from a natural resource called petroleum.
Refining: Petroleum is a mixture of various constituents such as petroleum, gas, petrol, diesel, lubricating oil, paraffin wax, etc. Separating the constituents of petroleum is known as refining.
Natural Gas: It is a very important fossil fuel. It is stored under high pressure as compressed natural gas (CNG) and can be easily transported through pipes. It is used in power generation or as a fuel for transport vehicles. CNG is also used as a fuel for cooking as well as for industrial purposes.
Some Natural Resources are Limited: Some natural resources like fossil fuels, forests, minerals, etc are exhaustible. Fossil fuels like coal and petroleum are obtained from dead animals. Thus, it takes millions of years for dead animals to be converted into these fuels. Moreover, the burning of these fuels causes air pollution which is one of the major reasons for global warming. Therefore, it is necessary that we use these fuels judiciously.
FAQs Related To NCERT Solutions For Class 8 Science Chapter 5
Here we have provided some of the frequently asked questions:
Q1: Name the petroleum product used for surfacing of roads.
A: Bitumen is used for the surfacing of roads.
Q2: Fill in the blanks. (a) Fossil fuels are _____, _____, and _____. (b) Process of separation of different constituents from petroleum is called _____. (c) Least polluting fuel for a vehicle is _____.
A: (a) Fossil fuels Coal, Petroleum, and natural gas. (b) Process of separation of different constituents from petroleum is called refining. (c) Least polluting fuel for a vehicle is Compressed Natural Gas (CNG).
Q3: Explain the process of formation of petroleum.
A: Dead organisms that got buried in the sea millions of years ago got covered with layers of sand and clay. Due to lack of air, high temperature and high pressure, these dead organisms got transformed into petroleum and natural gas.
Q4: What are the advantages of using CNG and LPG as fuels?
A: The advantages of using CNG and LPG as fuels are as follows: i) CNG and LPG burn easily. ii) CNG and LPG give a lot of heat energy when burnt. iii) CNG and LPG can be transported easily through pipelines. iv) CNG and LPG are clean fuels and they do not release smoke when burnt.
Q5: Tick True/False against the following statements. (a) Fossil fuels can be made in the laboratory. (T/F) (b) CNG is more polluting fuel than petrol. (T/F) (c) Coke is the almost pure form of carbon. (T/F) (d) Coal tar is a mixture of various substances. (T/F) (e) Kerosene is not a fossil fuel. (T/F)
A: a) False b) False c) True d) True e) False
Students can also refer to the NCERT solutions for class 8 science chapter 5 PDF download or NCERT solutions for class 8 science chapter 5 in Hindi Medium based on their requirements to prepare well for the exam in an efficient way.
So, in this chapter, we have learned about fossil fuels – petroleum, coal, and natural gas. After reading the chapter, and going through the revision notes you will be able to answer the questions related to the chapter ‘Coal and Petroleum’. You are advised to solve the questions given in the NCERT Books for Class 8 Science Chapter 5.
We hope this detailed article on CBSE NCERT solutions Class 8 Science Chapter 5 helps you. If you have any queries regarding this article on “ Coal and Petroleum”, drop your comments below and we will get back to you as soon as possible.