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NCERT Solutions for Class 8 Science

NCERT Solutions for Class 8 Science

Edited By Vishal kumar | Updated on May 21, 2024 01:12 PM IST

NCERT Solutions Class 8 Science – Download Free PDFs 2024–25

NCERT Solutions for Class 8 Science: Are you a CBSE student studying in Class 8? The search for NCERT solutions for Class 8 science, ends here? Look no further! The comprehensive NCERT solutions of science presented in a simple and step-by-step manner. are provided here. These solutions are designed to make understanding each chapter effortless, enabling you to excel in your studies and complete class 8 science question answers with ease.

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. 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.

NCERT Solutions for Class 8 Science All Chapter PDFs

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.

The following chapters have been removed from the NCERT Class 8 Science textbook 2023-24:

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.

NCERT Solutions Class 8 Science Chapters Introduction

As per NCERT class 8 Science syllabus, there are a total of 18 chapters. But in the revised syllabus, six chapters have been removed from the syllabus. You can check the details of each chapter below:

Chapter 1: Crop Production and Management

NCERT science solutions class 8 consists 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 also. 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 NCERT solutions 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 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: Synthetic Fibres and Plastics

The concept of natural and synthetic fibres are dealt with in this chapter of CBSE science solutions class 8. Other important topics of class 8 science ncert solutions are

  • Acrylic, artificial silk

  • Nylon

  • Plastic, polyester

  • Polymer, polythene, and rayon.

There are 15 questions and sub-questions in the exercises NCERT class 8 Science solutions chapter 3. Solving all the questions is mandatory for scoring good marks in your class exams.

Topics Covered in Class 8 science chapter 3 question answer Synthetic Fibres and Plastics:

Chapter 3 of NCERT Class 8 Science book introduces students to synthetic fibers like rayon, nylon, polyester, and acrylic, explaining their characteristics. It also covers plastics, highlighting their properties and environmental impact. Students gain a comprehensive understanding of these materials and the need for responsible usage to protect the environment.

Chapter 4: Materials - Metals and Non-Metals

In Class 8 science chapter 4 the Materials Metals and Non Metals, you will study the chemical and physical properties of metals and non-metals. CBSE NCERT solutions for class 8 Science chapter 4 will tell you which one of them (metals) will react with water and which of them will react with acid.

NCERT Solutions science class 8 contains the answers to 11 questions asked in the book. Many interesting activities are mentioned in the chapter which you can perform with the help of your teacher.

Topics Covered in Class 8 science chapter 4 question answer Materials – Metals and Non-Metals:

In Chapter 4 of NCERT Class 8 Science, students explore the intriguing world of metals and non-metals. This chapter delves into the physical and chemical properties that distinguish these two groups of elements. To enhance understanding, the NCERT book incorporates various activities that allow students to observe and experience these properties firsthand.

Chapter 5: Coal and Petroleum

Coal and Petroleum is the 5th chapter. Resources which are exhaustible are explained in this chapter of 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. There are a total of nine questions mentioned in the exercise and students can find answers to all of them in NCERT class 8 Science solutions of chapter 5

Topics Covered in Class 8 science chapter 5 question answer Coal and Petroleum:

In Chapter 5, "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, emphasizing 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 6: Combustion and Flame

Combustion and Flame is the 6th chapter of NCERT Solution for class 8, in ch. 6 science class 8 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 NCERT class 8 Science of this chapter contain answers to the 13 questions asked in the exercise.

Topics Covered in Class 8 science chapter 6 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 7: 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. Within this chapter, it 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 7 question answer Conservation of Plants and Animals:

  • Biodiversity

  • Biosphere reserve

  • Deforestation

  • Desertification

  • Ecosystem, etc.

At the end of the chapter, a few questions are available. CBSE NERT solutions science class 8 for those and some other questions are available now.

Chapter 8: Cell Structure and Function

In Cell Structure and Functions, you will study the structural and functional unit of life, which is the cell. Also, you will get to know different types of cells in the NCERT class 8 Science solutions of Chapter eight. NCERT CBSE 8th Science solutions chapter 8 consists of the following topics:

  • Discovery of cell

  • The cell

  • Cell structure and function

  • Parts of the cell

  • Comparison of plant cell and animal cell

Chapter 9: 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 9, 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 9 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 next classes. So refer to NCERT Solutions for Class 8 Science, chapter 8, to lay foundation for upcoming classes.

Chapter 10: Reaching the Age of Adolescence

In Reaching the Age of Adolescence, Puberty and adolescence are explained in this chapter of NCERT class 8 Science solutions. The role of hormones during the changes in adolescence is studied in the chapter 10th of NCERT science class 8 solutions. You must have noticed this with you or your friends.

Topics Covered in Class 8 science chapter 10 question answer Reaching the Age of Adolescence:

Chapter 10 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, emphasizing the importance of well-being during this transformative stage of life.

Chapter 11: 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 11 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 12: 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 12: friction will help you answer these questions and scoring well.

Topics Covered in Class 8 science chapter 12 question answer Friction:

Chapter 12 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 13: Sound

What is sound and how it travels through a different medium 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 in this chapter. The preventive measures of noise pollution are also mentioned NCERT 8 Science solutions chapter 13.

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

Chapter 13 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 science ncert solutions class 8 chapter 13 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 14: 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 8th science. These and more such interesting activities with examples are taught here.

Topics Covered in Class 8 science chapter 14 question answer Chemical Effect of Electric Current:

Chapter 14 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 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 15: Some Natural Phenomena

The name of the 15th chapter is Some Natural Phenomena. Study of lightning, earthquakes, how to minimize 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 Covered in science ncert solutions class 8 Some Natural Phenomena:

Topics included in NCERT solutions for Class 8 Science chapter 15

  • Lightning

  • Charging by Rubbing

  • Types of Charges and Their Interaction

  • Transfer of Charge

  • The Story of Lightning

  • Lightning Safety

  • Earthquakes

Chapter 16: Light

In this chapter of 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 16 question answer Light:

Chapter 16 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.

Chapter 17: Stars and the Solar System

In Stars and the Solar System, topics like Space, planets, comets, constellations and the solar system are explained. You will have a total of 16 questions in this chapter and can find the answers by referring to NCERT science class 8 solutions.

Topics Covered in Class 8 science chapter 17 question answer Star and Solar System:

Chapter 17 of Class 8 Science explores celestial objects like the moon, stars, and constellations. It then delves into the solar system, discussing each planet's unique features. The chapter covers other members of the solar system, such as asteroids, comets, meteors, and meteorites, as well as artificial satellites. By studying this chapter, students gain a fascinating understanding of the cosmos and the wonders of our solar system

NCERT Class 8 Solutions Science For Chapter 18 Pollution of Air and Water

The very last chapter of NCERT class 8 Science is the pollution of air and water. Here, you will learn answers to questions like how does air as well as the water get polluted, what are the examples of air pollution and water pollution and what can be done to fix it? The chapter creates awareness about pollution and preventive measures against it.

Topics Covered in Class 8 science chapter 18 question answer Pollution of Air and Water:

Chapter 18 of Class 8 Science addresses the harmful effects of air and water pollution on the environment and human lives. It discusses the sources and impact of air pollution, including its effect on the Taj Mahal. The concept of the greenhouse effect and methods to reduce air pollution are explained. The chapter also covers water pollution sources and methods for water purification and pollution control. By studying this chapter, students become aware of environmental preservation and measures to combat pollution for a healthier world.

Other NCERT Resources for Class 9 Science

In addition to the NCERT Class 9 Science Solutions, students should utilize other study materials such as NCERT Class 9 Science Notes, NCERT Class 9 Science Exemplar, the NCERT Class 9 Science textbook, and the NCERT Class 9 Science Syllabus. These resources are designed in alignment with the CBSE Class 9 Science syllabus and play a crucial role in helping students prepare for their board exams. With comprehensive coverage of the subject, these materials reinforce concepts, provide practice questions, and enhance problem-solving skills, enabling students to excel in their examinations.

Benefits of using NCERT Class 8 Science Solutions

  • Well, 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 aids understand 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.

Why opt for Careers360?

Opting for Careers360 for NCERT solutions for Science Class 8 offers several advantages:

  1. Comprehensive Solutions: Careers360 provides detailed and comprehensive solutions for all chapters in the Class 8 Science NCERT textbook, ensuring a deep understanding of concepts.

  2. Expert-Crafted Solutions: The solutions are crafted by subject matter experts, guaranteeing accuracy and clarity in explanations.

  3. Free Access: The solutions are freely accessible, making quality education available to all students.

  4. User-Friendly Format: Solutions are presented in an easy-to-understand format with step-by-step explanations and diagrams.

  5. Wide Coverage: Careers360 covers all chapters, topics, and exercises, leaving no gaps in the learning process.

  6. Additional Resources: In addition to solutions, Careers360 offers additional study materials and resources to aid in exam preparation.

  7. Flexible Learning: Students can access solutions online or download them in PDF format for offline use, providing flexibility in learning.

  8. Boosted Performance: Using these solutions can significantly improve a student's performance in exams.

By choosing Careers360 for NCERT solutions for Class 8 Science chapters, students can benefit from quality educational resources and enhance their understanding of the subject.

NCERT Books and NCERT Syllabus:

Frequently Asked Question (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.


Get answers from students and experts

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)


Option 2)

\; K\;

Option 3)


Option 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)


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)


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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