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NCERT Solutions for Class 8 Science - Download Chapter wise Solution PDF

NCERT Solutions for Class 8 Science - Download Chapter wise Solution PDF

Edited By Irshad Anwar | Updated on Apr 21, 2025 06:58 PM IST

The solutions provide a structured and easy-to-understand explanation for all the chapters in Class 8 Science as per the CBSE curriculum. Our questions and answers will help students improve their conceptual understanding in topics such as crop production, microorganisms, force and pressure and more. The answers are framed in a clear and step-by-step format to improve learning and memory.

This Story also Contains
  1. NCERT Solutions for Class 8 Science - All Chapter Links
  2. Introduction to NCERT Solutions Class 8 Science Chapters
  3. Benefits of using NCERT Class 8 Science Solutions
NCERT Solutions for Class 8 Science - Download Chapter wise Solution PDF
NCERT Solutions for Class 8 Science - Download Chapter wise Solution PDF

Science is a crucial subject for Class 8 students, and we understand the significance of having reliable solutions for NCERT class 8 Science book. Our team of subject matter experts has prepared these NCERT solutions for Class 8 Science using simple language, making them accessible and helpful for any doubts you may have while doing homework or learning new topics. The comprehensive NCERT solutions of science presented in a simple and step-by-step manner. are provided here. By using these NCERT solutions, you can ensure that your answers are correct and even verify them against the solutions provided. From Class 8 Science Chapter 1 to 18, our NCERT solution covers all topics comprehensively.

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NCERT Solutions for Class 8 Science - All Chapter Links

Here, students can find chapter-wise NCERT solutions for class 8 Science chapters in one place, which are very helpful for students as these are created considering the latest syllabus and pattern of CBSE 2024-25 and updated on a regular basis. Below are the Chapter-wise solutions:

With all the Class 8 solution links provided above, students can now access comprehensive NCERT solutions and excel in their studies with ease. These resources will undoubtedly prove valuable in their journey towards academic success and a deeper understanding of Science concepts.

Introduction to NCERT Solutions Class 8 Science Chapters

You can check the details of each chapter below:

Chapter 1: Crop Production and Management

The solutions consist of agricultural practices, crop fertiliser, harvesting, irrigation, and other topics. CBSE Science NCERT class 8 solutions will help you understand these topics well.

As an activity, you can visit farming lands and study how farmers are doing their jobs, and you can ask them questions about the farming-related activities you have studied in the chapter.

Topics Covered in Class 8 science chapter 1 question answer Crop Production and Management:

In class 8 science chapter 1, "Crop Production and Management," students will explore various aspects of agricultural practices, including soil preparation, sowing, adding manures and fertilisers, irrigation, weed protection, harvesting, storage, and the significance of food derived from animals. Understanding these fundamental principles is crucial for developing a comprehensive knowledge of crop production and its essential role in our lives.

Chapter 2: Microorganisms - Friend and Foe

Microorganisms are used to make curd, develop medicines and vaccines etc. Not all microorganisms are good. Some of them are even harmful to human health. NCERT class 8 Science solutions chapter 2 deals with good and bad aspects of microorganisms. An interesting fact about microorganisms, their use and more will be taught here.

Types of microorganisms included in the NCERT solutions for class 8, chapter 2 are given below:

  • Bacteria

  • Fungi

  • Protozoa

  • Algae

  • Viruses.

Topics Covered in Class 8 science chapter 2 question answer Microorganisms: Friend and Foe:

In the class 8 science chapter, "Microorganisms: Friend and Foe," students will read about the fascinating world of microorganisms. They will learn about the diverse habitats of microorganisms, their impact on human life, the differentiation between beneficial and harmful microorganisms, and their role in food preservation. Additionally, students will explore essential concepts like nitrogen fixation and the nitrogen cycle, gaining a deeper understanding of these tiny but influential organisms and their significance in the ecosystem.

Chapter 3: Coal and Petroleum

Coal and Petroleum is the 3rd chapter. Resources which are exhaustible are explained in this chapter of the NCERT class 8th Science solutions. You will know what they are, why we need them and how to decrease their usage. You will also study coal, petroleum, natural gas, fossil fuels, and other important topics. Students can find answers to all of the questions in the NCERT exercise in the solution pages.

Topics Covered in Class 8 science chapter 3 question answer Coal and Petroleum:

In Chapter 3, "Coal and Petroleum," students explore two crucial fossil fuels, coal and petroleum, along with natural gas. The chapter highlights their formation, extraction, and usage in various industries. Additionally, students learn about the finite nature of these resources, emphasising the importance of conserving and using them wisely for sustainable development. By studying this chapter, students gain valuable insights into the significance of fossil fuels in our lives and the need to preserve them for future generations.

Chapter 4: Combustion and Flame

Combustion and Flame is the 4th chapter of the NCERT Solution for class 8. Here, we study the chemical process of burning and the different types of flames are explained. You will also learn about the negative points of combustion. The solutions of this chapter contain answers to the questions asked in the exercise.

Topics Covered in Class 8 science chapter 4 question answer Combustion and Flame:

  • What is Combustion?
  • How do We Control Fire?
  • Types of Combustion, Flame
  • Structure of Flame,
  • What is fuel?
  • Fuel Efficiency

Chapter 5: Conservation of Plants and Animals

The NCERT Solutions for Class 8 include a chapter on the Conservation of Plants and Animals, which discusses various aspects of preserving biodiversity. This chapter highlights the sad reality of extinct species, such as the Dodo bird. Alongside the Dodo, numerous other species have also vanished from the face of the Earth. The chapter sheds light on the conservation efforts needed to protect birds, mammals, reptiles, amphibians, fish, and even insects that migrate for various reasons, emphasising the importance of safeguarding their habitats and ensuring their survival.

Topics Covered in Class 8 science chapter 5 question answer: Conservation of Plants and Animals:

  • Biodiversity

  • Biosphere reserve

  • Deforestation

  • Desertification

  • Ecosystem, etc.

Chapter 6: Reproduction in Animals

The vast array of living organisms, including animals, plants, and birds, sparks curiosity about how new organisms come into existence and how animals give birth to offspring resembling their parents. The answer lies in the process of reproduction. In NCERT Class 8 Science, Chapter 6, titled "Reproduction in Animals," comprehensive answers can be found covering all aspects of animal reproduction, including modes of reproduction, reproductive organs, fertilisation, gestation, and nurturing of young ones. Understanding these topics is crucial to grasping the life cycle and survival of various animal species.

Topics Covered in Class 8 science chapter 6 question answer Reproduction in Animals:

In Reproduction in Animals, you will learn how reproduction takes place in different living organisms, what the different modes of reproduction are, and such. This chapter is very important to create the foundation for the next classes. So, refer to the NCERT Solutions for Class 8 Science, chapter 6, to lay the foundation for upcoming classes.

Chapter 7: Reaching the Age of Adolescence

In Reaching the Age of Adolescence, Puberty and adolescence are explained in this chapter of the NCERT class 8 Science solutions. The role of hormones during the changes in adolescence is studied in this chapter. You must have noticed this with you or your friends.

Topics Covered in Class 8 science chapter 7 question answer: Reaching the Age of Adolescence:

Chapter 7 of NCERT Class 8 Science, "Reaching the Age of Adolescence," explores the topic of adolescence and puberty. It covers the changes during puberty, secondary sexual characteristics, and the role of hormones in initiating reproductive functions. The chapter also discusses the reproductive phase of life in humans, the determination of the baby's sex, and the role of hormones in completing the life history of insects and frogs. Additionally, it introduces the concept of reproductive health, emphasising the importance of well-being during this transformative stage of life.

Chapter 8: Force and Pressure

In Class 8 Science, Chapter 8 marks the beginning of the physics section in the textbook. This foundational chapter holds significant importance as it lays the groundwork for understanding the subsequent chapters and even concepts taught in higher classes. By mastering the principles introduced in this chapter, students can build a solid understanding of fundamental physics concepts, preparing them for more complex topics in the future. It serves as a crucial stepping stone towards a deeper comprehension of the world of physics, enabling students to excel in their academic journey and scientific pursuits.

Topics Covered in Class 8 science chapter 8 question answer Force and Pressure:

In this lesson, we study force and types of force like contact force, electrostatic force, magnetic force and other topics. The concepts of force are explained in detail here. This is an important chapter which will help in the higher classes.

Chapter 9: Friction

In Friction, the real-life examples of friction and factors affecting friction are explained with the help of many activities. At the end of the chapter, there are many questions. The solutions of NCERT class 8 Science chapter 9: friction will help you answer these questions and score well.

Topics Covered in Class 8 science chapter 9 question answer Friction:

Chapter 9 of Class 8 Science, "Friction," introduces students to the force of friction, which opposes the motion between objects in contact. It explores factors affecting friction and discusses how friction is both helpful and hindering in different situations. The chapter also highlights the significance of reducing friction with the use of wheels and introduces the concept of fluid friction experienced by objects moving through liquids and gases. By studying this chapter, students gain a deeper appreciation for the role of friction in everyday life and its impact on various mechanical systems.

Chapter 10: Sound

What sound is and how it travels through different media is explained in this chapter of Class 8 NCERT science solutions. Questions related to noise pollution, which causes health problems to human beings as well as other organisms, are dealt with in this chapter. The preventive measures of noise pollution are also mentioned in the solutions.

Topics Covered in Class 8 science chapter 10 question answer Sound:

Chapter 10 of Class 8 Science, "Sound," explores the nature of sound and its characteristics. It discusses how sound is produced by vibrating bodies, including humans, and how it requires a medium for propagation. The chapter introduces key concepts like amplitude, time period, and frequency that influence sound waves. Students also learn about audible and inaudible sounds, differentiate between noise and music, and understand the detrimental effects of noise pollution on the environment and human well-being. By studying this chapter, students gain valuable insights into the fascinating world of sound and its significance in our lives.

Chapter 11: Chemical Effects of Electric Current

The battery that we use utilises chemical energy to produce an electric current. Electroplating is an interesting example of the chemical effect of current, which is described in the 8th grade. These and more such interesting activities with examples are taught here.

Topics Covered in Class 8 science chapter 11 question answer Chemical Effect of Electric Current:

Chapter 11 of Class 8 Science, "Chemical Effects of Electric Current," focuses on the connection between electricity and chemical reactions. Students explore whether liquids can conduct electricity and learn about the chemical changes that occur due to an electric current. The chapter also introduces electroplating, a process that uses electricity to coat one metal with another. By studying this chapter, students gain insights into the significant role of electricity in inducing chemical effects and its practical applications in electroplating.

Chapter 12: Some Natural Phenomena

The name of the 12th chapter is Some Natural Phenomena. Study of lightning, earthquakes, and how to minimise the destruction caused by these phenomena are some interesting topics discussed in the chapter of NCERT 8th class Science solutions. The Science behind lightning arresters set above many buildings is also explained here.

Topics included in the NCERT solutions for Class 8 Science chapter 12

  • Lightning

  • Charging by Rubbing

  • Types of Charges and Their Interaction

  • Transfer of Charge

  • The Story of Lightning

  • Lightning Safety

  • Earthquakes

Chapter 13: Light

In this chapter of the 8th-grade science NCERT solutions on light, you will delve into the fundamentals of light and its behaviour. You will learn about the characteristics of light, including how it travels and interacts with various objects and substances. By studying this chapter, you will gain a deeper understanding of the fascinating properties of light and its essential role in our daily lives.

Topics Covered in Class 8 science chapter 13 question answer Light:

Chapter 13 of Class 8 Science, "Light," covers the fascinating world of light and its interaction with objects. Students learn about the factors that make things visible, the laws of reflection, and different types of reflection. The chapter also explores the formation of multiple images by reflected light and the nature of sunlight. Additionally, students gain insights into the workings of the human eye, the importance of eye care, and the Braille system used by visually impaired individuals for reading and writing.

Benefits of using NCERT Class 8 Science Solutions

  • Science is a scoring subject, and if you use the given solutions of NCERT class 8 Science, you can be sure to do well in the main exam.

  • NCERT solutions class 8 Science aid in understanding the concepts and clear doubts instantly.

  • Since class 8 is the foundation for the next few years to come, you can build the foundation well with the help of the NCERT science class 8 solutions.

  • NCERT class 8 Science solutions consist of the answers to all the questions asked in NCERT class 8 books.

  • If you understand how to answer the questions, you can easily answer questions from other reference books.

NCERT Books and NCERT Syllabus:

Frequently Asked Questions (FAQs)

1. Which topics are available in NCERT Class 8 Science solutions?

All topics and answers to the questions of all chapters are available in NCERT 8th class Science solutions.

2. What is the total cost of NCERT solutions for class 8 Science?

NCERT class 8 solutions Science are available free of cost on this page. Students can bookmark this link and use them anytime.

3. Can I download NCERT Class 8 Science solutions?

Yes, you download NCERT 8th class Science solutions as HTML webpage in your browser by clicking on the download web page button. After downloading, NCERT solutions for class 8 Science can be used without any internet connection.

4. Where can I get solutions to the questions asked in the Class 8 Science book?

You can open chapter-wise links given here to access NCERT CBSE class 8 Science solutions for the questions asked in NCERT textbook.

Articles

A block of mass 0.50 kg is moving with a speed of 2.00 ms-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

Option 1)

0.34\; J

Option 2)

0.16\; J

Option 3)

1.00\; J

Option 4)

0.67\; J

A person trying to lose weight by burning fat lifts a mass of 10 kg upto a height of 1 m 1000 times.  Assume that the potential energy lost each time he lowers the mass is dissipated.  How much fat will he use up considering the work done only when the weight is lifted up ?  Fat supplies 3.8×107 J of energy per kg which is converted to mechanical energy with a 20% efficiency rate.  Take g = 9.8 ms−2 :

Option 1)

2.45×10−3 kg

Option 2)

 6.45×10−3 kg

Option 3)

 9.89×10−3 kg

Option 4)

12.89×10−3 kg

 

An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the range

Option 1)

2,000 \; J - 5,000\; J

Option 2)

200 \, \, J - 500 \, \, J

Option 3)

2\times 10^{5}J-3\times 10^{5}J

Option 4)

20,000 \, \, J - 50,000 \, \, J

A particle is projected at 600   to the horizontal with a kinetic energy K. The kinetic energy at the highest point

Option 1)

K/2\,

Option 2)

\; K\;

Option 3)

zero\;

Option 4)

K/4

In the reaction,

2Al_{(s)}+6HCL_{(aq)}\rightarrow 2Al^{3+}\, _{(aq)}+6Cl^{-}\, _{(aq)}+3H_{2(g)}

Option 1)

11.2\, L\, H_{2(g)}  at STP  is produced for every mole HCL_{(aq)}  consumed

Option 2)

6L\, HCl_{(aq)}  is consumed for ever 3L\, H_{2(g)}      produced

Option 3)

33.6 L\, H_{2(g)} is produced regardless of temperature and pressure for every mole Al that reacts

Option 4)

67.2\, L\, H_{2(g)} at STP is produced for every mole Al that reacts .

How many moles of magnesium phosphate, Mg_{3}(PO_{4})_{2} will contain 0.25 mole of oxygen atoms?

Option 1)

0.02

Option 2)

3.125 × 10-2

Option 3)

1.25 × 10-2

Option 4)

2.5 × 10-2

If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will

Option 1)

decrease twice

Option 2)

increase two fold

Option 3)

remain unchanged

Option 4)

be a function of the molecular mass of the substance.

With increase of temperature, which of these changes?

Option 1)

Molality

Option 2)

Weight fraction of solute

Option 3)

Fraction of solute present in water

Option 4)

Mole fraction.

Number of atoms in 558.5 gram Fe (at. wt.of Fe = 55.85 g mol-1) is

Option 1)

twice that in 60 g carbon

Option 2)

6.023 × 1022

Option 3)

half that in 8 g He

Option 4)

558.5 × 6.023 × 1023

A pulley of radius 2 m is rotated about its axis by a force F = (20t - 5t2) newton (where t is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is 10 kg m2 , the number of rotations made by the pulley before its direction of motion if reversed, is

Option 1)

less than 3

Option 2)

more than 3 but less than 6

Option 3)

more than 6 but less than 9

Option 4)

more than 9

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