NCERT Solutions for Class 8 – Complete Chapter-wise Study Material
5. Coal And Petroleum is one of the most important chapters in the Class 8 Science English NCERT Solutions curriculum. This chapter plays a significant role in helping students build a strong conceptual foundation while preparing for school examinations, class tests, unit tests, half-yearly examinations, annual examinations, and CBSE board assessments. The chapter has been carefully designed according to the latest NCERT syllabus, making it an essential part of every student's study plan.
The 5. Coal And Petroleum - Class 8 Science English NCERT Solutions available on ATP Education explain every question in a simple, accurate, and step-by-step manner. Each answer is prepared according to the latest CBSE guidelines so that students can understand the concepts clearly without confusion. Whether you are completing your homework, revising before examinations, or strengthening your understanding of the subject, these solutions provide reliable academic support throughout your learning journey.
One of the biggest advantages of studying 5. Coal And Petroleum is that it helps students understand important concepts, definitions, examples, and textbook exercises in an organized way. Instead of memorizing answers, students learn how to develop logical thinking, improve analytical skills, and write well-structured answers in examinations. This chapter also helps improve problem-solving ability and encourages conceptual learning, which is essential for scoring higher marks in school and competitive examinations.
Our Class 8 Science NCERT Solutions cover all textbook questions, important exercise questions, and chapter-wise explanations in English Medium. Every solution is written in easy-to-understand language, allowing students to revise the chapter quickly before examinations. Regular practice of these solutions improves confidence, strengthens subject knowledge, and reduces examination stress.
Students preparing for school assessments should carefully study 5. Coal And Petroleum because questions from this chapter are frequently asked in objective questions, short answer questions, long answer questions, competency-based questions, and case-study questions. Understanding the concepts explained in this chapter also helps students connect related topics from other chapters, making overall learning more effective and meaningful.
At ATP Education, we continuously update our Class 8 Science English NCERT Solutions according to the latest NCERT textbooks and CBSE curriculum. Students can confidently use these chapter-wise solutions for daily study, homework assistance, quick revision, examination preparation, and self-learning. By studying 5. Coal And Petroleum thoroughly and practising every question regularly, students can strengthen their concepts, improve writing skills, and achieve better academic performance in both school and board examinations.
5. Coal And Petroleum - Class 8 Science English NCERT Solutions
5. Coal And Petroleum
Chapter Review
Chapter Review:
- Petroleum is a dark oily liquid. It has an unpleasant odour. It is a mixture of various constituents such as petroleum gas, petrol, diesel, lubricating oil, paraffin wax, etc.
- These resources are present in unlimited quantity in nature is called Inexhaustible. Examples are: sunlight, air.
- The amount of these resources in nature is limited are called exhaustible. Examples of these resources are forests, wildlife, minerals, coal, petroleum, natural gas etc.
- The dead remains of living organisms (fossils). So, these are all known as fossil fuels.
- As coal contains mainly carbon, the slow process of conversion of dead vegetation into coal is called carbonisation.
- Coke is a tough, porous and black substance. It is almost pure form of
carbon.It is used in the manufacture of steel. - Coal tar is a black, thick liquid with unpleasant smell. It is a mixture of about 200 substances.
- Petrol and diesel are obtained from a natural resource called petroleum.
- The world’s first oil well was drilled in Pennsylvania, USA, in 1859.
- Great commercial importance, petroleum is also called ‘black gold’.
- The process of separating the various constituents fractions of petroleum is known as refining. It is carried out in a petroleum
refinery. - Natural gas is a very important fossil fuel because it is easy to transport through pipes.
- CNG is used as a fuel for transport vehicles because it is less polluting.
5. Coal And Petroleum
Text Book Exercise
Exercise
Q1. What are the advantages of using CNG and LPG as fuels?
Answer : The advantages of using CNG and LPG are as follows :
(i) These are clener fuels.
(ii) These are low coct fuels.
(iii) These are available easily.
(iv) These can be used directly for buring in homes and factories where it can supplied through pipes.
Q2. Name the petroleum product used for surfacing of roads.
Answer : These days bitumen, a petroleum product is used for surfacing the roads in place of coaltar.
Q3. Describe how coal is formed from dead vegetation. What is this process called?
Answer: About 300 million years ago, earth was having dense forests in low lying wet land areas. Due to earthquakes and volcanic erruptions, these forests got buried under he soil. As more soil deposited over them, they were compressed. The temperature also raised as they sank deeper and deeper. Due to high temperature and lack of oxygen dead plants inside the earth got slowly converted to coal. As coal contains manily carbon, the slow process of conversion of dead vegetation into coal is called carbonisation.
Q4. 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 vehicle is .
Answer : (a) coal, petroleum, natural gas.
(b) refining.
(c) CNG (compressed natural gas).
5. 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 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)
Answer:
(a)-(f) (b)-(f) (c)-(t) (d)-(t) (e)-(f)
6. Explain why fossil fuels are exhaustible natural resources.
Answer:
Fossil fuels are present in nature is limited quantity and are being exhausted abundantly by us. That is why fossil fuels are called exhaustable natural resourses.
7. Describe characteristics and uses of coke.
Answer:
Coke is a tough, porous and substance. It is almost pure form of carbon. It is use vin the manufacture of steel and in the extraction of many metals.
8. Explain the formation of pertroleum.
Answer:
petroleum is formed from organisms living in the sea. When these organisms died, their bodies seettled at the bottom of the sea and got covered with layers of sand and clay. Over millions of years, they were transformed into petroleum and natural gas under the absence of air and presence og high temperature and pressure.
Q9. The following table shows the total power shortage in india from 1991 - 1997. show the data in the from of a graph. Plot shortage percentage for the years on the Y - axis and the year on the X - axis.
Answer:
5. Coal And Petroleum
Text Book Exercise
Text Book Exercise:
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 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)
Answer : (a) (F), (b) (F), (c) (T), (d) (T), (e) (F).
Q6. Explain why fossil fuels are exhaustible natural resources.
Answer : Fossil fuels are present in nature in limited quantity and are being exhausted abundantly by us. That is why fossil fuels are called exhaustible natural resources.
Q7. Describe characteristics and uses of coke.
Answer : Coke is a tough porous black substance. It is almost pure form of carbon. It is used in the manufacture of steel and in the extraction of many metals.
Q8. Explain the process of formation of petroleum.
Answer : Petroleum is formed from organisms living in the sea. When these organisms died, their bodies settled and the bottom of the sea and got coverd with layers of sand and clay. Over millions of years, they were transformed into petroleum, oil and natural gas under the absence of air and presense of high temperature and high pressure.
5. Coal And Petroleum
Additional Questions With Solutions
Additional Questions With Solutions
Q1: Name three natural resources.
Ans: Air, water and minerals.
Q2: Why air, water minerals and soil are called natural resources?
Ans: Because they are provided by nature. Human beings cannot make them.
Q3: Name two inexhaustible natural resources.
Ans: Sunlight and air.
Q4: Name two exhaustible resources.
Ans: Wildlife and minerals.
Q5: Name the gas produced during destructive distillation of coal?
Ans: Coal gas.
Q6: How is coal gas now-a-days?
Ans: Now-a-days the coal gas is used as a source of heat rather than light.
Q7: Where was the first oil well drilled?
Ans: The world‘s first oil well was drilled at Pennsylvania USA in 1859.
Q8: When was the first oil well drilled in India and where?
Ans: In 1867 at Makum in Assam.
Q9: What is full form of PCRA?
Ans: Full form of PCRA is Petroleum Conservation Research Association.
Q10: What is termed as black Gold?
Ans: Petroleum is termed as black gold.
Q11: What are the advantages of using CNG and LPG as fuels?
Ans: The advantage of using CNG and LPG are as follows:
(i) These are cleaner fuels.
(ii) These are low cost fuels.
(iii) These are available easily.
(iv) These can be used directly for burning in homes and factories where it can be supplied through pipes.
5. Coal And Petroleum
Additional Questions With Solutions
Additional Questions With Solutions
Q12: Name the petroleum product is used for surfacing of roads?
Ans: These days bitumen, a petroleum product is used for surfacing the roads in place of coaltar.
Q13: Described how coal is formed from dead vegetation. What is this called?
Ans: About 300 million years ago, earth was having dense forests in low lying wet land areas. Due to earthquakes and vocaline eruptions, these forest got buried under the soil. As more soil deposited over them, they were compressed. The temperature also raised as they sank deeper and deeper. Due to high temperature and lack of oxygen dead plants inside the earth got slowly converted to coal.
Q14: Explain why fossil fuels are exhaustible natural resources?
Ans: Fossile fuels are present in nature in limited quantity and are being exhausted abundantly by us that is why fossil fuels are called exhaustible natural resources.
Q15: Describe characteristics and uses of coke.
Ans: coke is a tough porous black substance It is almost pure form of carbon. It is used in manufacture of steel and in the extraction of many metals.
Q16: Explain the formation of petroleum?
Ans: Petroleum is formed from organism living in the sea. When these organisms died, their bodies settle at the bottom of sea and got covered with layers of sand and clay. Over million of years, they were transformed into petroleum, oil and natural gas under the absence of air and presence of high pressure.
Science
Class 8 (English Medium)
NCERT Science Textbook
Chapter-wise NCERT Solutions for Class 6 to 12 prepared according to the latest CBSE syllabus.
English Medium
NCERT Solutions Class 8 Science
Chapter 1. Crop Production And Management Solutions
1. Crop Production And Management Open Chapters
Explore Now →
NCERT Solutions Class 8 Science
Chapter 2. Microorganisms : Friend And Foe Solutions
2. Microorganisms : Friend And Foe Open Chapters
Explore Now →
NCERT Solutions Class 8 Science
Chapter 3. Synthetic Fibres And Plastics Solutions
3. Synthetic Fibres And Plastics Open Chapters
Explore Now →
NCERT Solutions Class 8 Science
Chapter 4. Materials : Metals And Non-Metals Solutions
4. Materials : Metals And Non-Metals Open Chapters
Explore Now →
NCERT Solutions Class 8 Science
Chapter 5. Coal And Petroleum Solutions
5. Coal And Petroleum Open Chapters
Explore Now →
NCERT Solutions Class 8 Science
Chapter 6. Combustion And Flame Solutions
6. Combustion And Flame Open Chapters
Explore Now →
NCERT Solutions Class 8 Science
Chapter 7. Conservation of Plants And Animals Solutions
7. Conservation of Plants And Animals Open Chapters
Explore Now →
NCERT Solutions Class 8 Science
Chapter 8. Cell-Structure and functions Solutions
8. Cell-Structure and functions Open Chapters
Explore Now →
NCERT Solutions Class 8 Science
Chapter 9. Reproduction in animals Solutions
9. Reproduction in animals Open Chapters
Explore Now →
NCERT Solutions Class 8 Science
Chapter 10. Reaching the age of adolescence Solutions
10. Reaching the age of adolescence Open Chapters
Explore Now →
NCERT Solutions Class 8 Science
Chapter 11. Force And Pressure Solutions
11. Force And Pressure Open Chapters
Explore Now →
NCERT Solutions Class 8 Science
Chapter 12. Friction Solutions
12. Friction Open Chapters
Explore Now →
NCERT Solutions Class 8 Science
Chapter 14. Chemical Effects of Electric Current Solutions
14. Chemical Effects of Electric Current Open Chapters
Explore Now →
NCERT Solutions Class 8 Science
Chapter 15. Some Natural Phenomena Solutions
15. Some Natural Phenomena Open Chapters
Explore Now →
NCERT Solutions Class 8 Science
Chapter 17. Stars And The Solar System Solutions
17. Stars And The Solar System Open Chapters
Explore Now →
NCERT Solutions Class 8 Science
Chapter 18. Pollution of Air and Water Solutions
18. Pollution of Air and Water Open Chapters
Explore Now →
Class 8 NCERT Book Solutions
Chapter-wise NCERT Solutions for Class 6 to 12 prepared according to the latest CBSE syllabus.
ENGLISH MEDIUM
NCERT Solutions Class 8 Its So Happened (English)
Class 8 Its So Happened (English) Book Solutions
Open Book
Explore Now →
NCERT Solutions Class 8 Honey Dew (English)
Class 8 Honey Dew (English) Book Solutions
Open Book
Explore Now →
NCERT Solutions Class 8 HoneyDew (English Poem)
Class 8 HoneyDew (English Poem) Book Solutions
Open Book
Explore Now →Benefits of Studying NCERT Solutions
Studying from NCERT Solutions helps students build strong conceptual understanding and improve problem-solving skills. These solutions are especially useful for revision because every answer is written according to the marking scheme followed by CBSE.
- Improve conceptual understanding.
- Learn correct answer-writing techniques.
- Prepare effectively for school examinations.
- Complete syllabus revision in less time.
- Practice important textbook questions.
- Build confidence before examinations.
Prepared According to the Latest CBSE Syllabus
All NCERT Book Solutions for Class 8 available on ATP Education are updated according to the latest CBSE curriculum. Whenever NCERT introduces changes in textbooks or syllabus, our study materials are revised accordingly so that students always receive accurate and updated content.
Helpful for Competitive Examinations
NCERT textbooks form the foundation of many competitive examinations. Students preparing for Olympiads, NTSE, CUET, UPSC Foundation, SSC and several entrance examinations can strengthen their basics through these chapter-wise solutions. Understanding NCERT concepts also improves analytical thinking and logical reasoning.
Simple and Student-Friendly Explanations
Our experts prepare every answer in a simple, clear and student-friendly format. Difficult concepts are explained step by step with proper reasoning so that students of every learning level can understand them easily. This approach helps students remember concepts for a longer period and perform confidently during examinations.
Start Learning with ATP Education
Explore the complete collection of NCERT Solutions for Class 8 and begin your preparation with confidence. Every chapter is available online for free and can be accessed anytime. Whether you want to complete homework, revise important chapters or prepare for examinations, ATP Education provides reliable and high-quality study resources to help you achieve academic success.
