Here we are providing NCERT Solutions for Class 8 Science, the solutions are latest and updated. You can download Solution for each and every chapters listed below chapter wise.
Science is the answer to all your inquisitive thoughts. Science tells us about formation of weather, our mother earth, the solar system, the reproduction and more things which we keep on pondering. Central Board of Secondary education has given the responsibility of designing and publishing the school books to NCERT. National Council of Education, Research and training is spearheading its duties well.
For a good preparation for school exams you need extra guidance which no other person can provide. You need someone who can guide you through exact answers and should be able to clear your concepts.
Thinking on the similar lines we have created NCERT solutions for class 8 Science. Experience a new way of learning with us. You can download the solutions by clicking on the link given below.
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NCERT Solutions for class 8 Science – Free PDF Download
CHAPTER 1: CROP PRODUCTION AND MANAGEMENT
Crop production and management – Agricultural practices (Cultivation of crops involves several activities undertaken by farmers over a period of time like preparation of soil, sowing, adding manure and fertilisers, irrigation, protecting from weeds, harvesting and storage), crop (when plants of the same kind are grown and cultivated at one place on a large scale, it is called a crop like kharif crops and rabi crops) and animal husbandry (obtaining food from animals on farming scale).
CHAPTER 2: MICROORGANISMS: FRIEND AND FOE
Organisms which can’t be seen by eyes alone are called microorganisms or microbes. Four major groups of microbes are bacteria, fungi, protozoa and algae. Viruses are also microscopic however, they reproduce only inside the cells of the host organism.
CHAPTER 3: SYNTHETIC FIBRES AND PLASTICS
The synthetic fibres and plastics are made by man (not natural), so it is called synthetic or man-made fibres. A synthetic fibre is a chain of small units (chemical substances) joined together. Many such small units combine to form a large single unit called a polymer. Poly means many and mer means part/unit.
CHAPTER 4: MATERIALS: METALS AND NON-METALS
Metals and non-metals can be distinguished from each other on the basis of physical (malleability, ductility, shining, sonorous, good conductor of heat and electricity, etc.) and chemical properties (gives ions – cation/anions, reaction with water, with air, etc.).
CHAPTER 5: COAL AND PETROLEUM
Wildlife, minerals, natural gas, coal and petroleum, etc. are exhaustible natural resources. As coal contains mainly carbon, the slow process of conversion of dead vegetation into coal is called carbonisation. Coke is the almost pure form of carbon. Petroleum was formed when the organism, living in the sea, died and settled at the bottom of the sea. Over millions of years, absence of air, high temperature and pressure transformed the dead organisms into petroleum and natural gas.
CHAPTER 6: COMBUSTION AND FLAME
A chemical process in which a substance reacts with oxygen to give off heat is called combustion and the substance undergoes combustion is called combustible or fuel. The lowest temperature at which a substance catches fire is called it ignition temperature. Types of combustion – rapid combustion and spontaneous combustion.
CHAPTER 7: CONSERVATION OF PLANTS AND ANIMALS
The conservation of plants and animals is necessary as they are essential for the well being and survival of mankind. We should protect the endemic and endangered species. The record of endangered species is given in RED DATA BOOK. We should save trees, energy and water by reduce, recycle and reuse (RRR).
CHAPTER 8: CELL – STRUCTURE AND FUNCTIONS
Cell is the basic structural unit of an organ. Just like bricks in building, the cells in the living organisms, are basic structural units. It is first observed by Robert Hooke in 1665 under a simple magnifying device. A human body has trillions (thousand billion) of cells of different shape and size. The smallest cell is 0.1 to 0.5 micrometre in bacteria and the largest cell is 170 mm x 130 mm in egg of an ostrich.
CHAPTER 9: REPRODUCTION IN ANIMALS
Reproduction in animals as well as in all living being is essential for the continuation of a species. Mode of reproduction – Sexual reproduction – This type of reproduction beginning from the fusion of male and female gametes. Asexual reproduction – This type of reproduction in which only a single parent is involved.
CHAPTER 10: REACHING THE AGE OF ADOLESCENCE
The period of life, when the body undergoes changes, leading to reproductive maturity, is called adolescence. The human body undergoes several changes during adolescence. These changes mark the onset of puberty. Increase in height, change in body shape, change in voice, development of sex organs, increase in activity of sweet and sebaceous glands, etc., are the changes at puberty.
CHAPTER 11: FORCE AND PRESSURE
A push or a pull on an object is called a force. If the forces acting in opposite direction, the net force acting on the object is difference between the two forces. Force can change the state of motion or shape. Contact forces – Muscular forces and friction force. Non-contact forces – Magnetic force, electrostatic force and gravitational force.
CHAPTER 12: FRICTION
Force of friction act between the surfaces of two objects. Friction is caused by the irregularity on the two surfaces in contact. Even those surfaces which appear very smooth have a large number of minute irregularities on them. The substances which reduce friction force are called lubricants. When one body rolls over the surface of another body, the resistance to its motion is called the rolling friction.
CHAPTER 13: SOUND
Sound plays an important role in our life. It helps us to communicate with one another. The to and fro or back and forth motion of an object is called vibration. In humans, the sound is produced by the voice box or the larynx which is at the upper end of the windpipe. Sound needs a medium for propagation it can’t travel in vacuum.
CHAPTER 14: CHEMICAL EFFECT OF ELECTRIC CURRENT
Under the certain conditions most of the materials conduct electricity. According to that it is classified as good conductors or poor conductors. The passage of an electric current through a conducting solutions causes chemical reactions is known as chemical effect of electric current. Electroplating is one of its example.
CHAPTER 15: SOME NATURAL PHENOMENA
Wind, storms, cyclones, lightning are some natural phenomena. Lightning is caused by the accumulation of charges in the clouds. Types of charges – positive and negative. Same charges repel each other and opposite charges attract each other. Electroscope is used to detect whether a body is having charge or not. Earthquake is another natural phenomena which can cause large scale destruction of human life and property.
CHAPTER 16: LIGHT
Light makes the things visible to our eyes. It follows the laws of reflection – incident angle = reflected angle. When all the parallel rays reflected from a plane surface are not parallel, the reflection is called diffused or irregular. On the other hand reflection from a smooth surface like that of a mirror is called regular reflection.
CHAPTER 17: STARS AND THE SOLAR SYSTEM
The stars, the planets, the moon and many other objects in the sky are called celestial objects. The various shapes of the bright part of the moon as seen during a month are called phases of moon. Moon’s surface is dusty and barren, there are many craters of different sizes. It has a large number of steep and high mountains. The stars forming a group that has a recognisable shape is called a constellation.
CHAPTER 18: POLLUTION OF AIR AND WATER
In the atmosphere, by volume about 78% of Nitrogen and 21% of oxygen. Carbon dioxide, argon, methane, ozone and water vapour are also present in very small quantities. When this composition is disturbed and air is contaminated by unwanted substance which have a harmful effect on both the living and non-living, it is referred to as air pollution.
Download Free NCERT Textbooks PDF for class 1st to 12th.
Science and Maths are two subjects which can make or break your percentage. So, it’s very important to have sound concepts and fundamentals. There are total 18 chapters in the NCERT science text book. All the solutions are given chapter wise with proper elaborations and techniques to solve it.
The basics knowledge of metals and non metals starts from class 8 along with detailed knowledge on coal, petroleum and combustion. Every year one question certainly asked from the byproducts of refining petroleum. The physics part is also interesting as it covers some basic concepts of friction, force, pressure, sound, Light, stars & solar system and electric current along with their units.
All this forms the base of study in higher classes. Some general chapters such as conservation of plants and animals, pollution etc are easy but the student should know how write as per the distribution of marks and how to keep answer short and crispy.
Biology part covers complete study regarding micro-organisms and how they act as our friend as well as foe. And the most important part is the Cell structure which you need to learn by heart. You should be well aware of each and every part of a cell and its function.
All the solutions are curated as per the latest syllabus prescribed by CBSE and strictly follow CCE marking scheme. So, now the game lies in your hand completely. Learn in a new way with www.educationlearnacademy.com. Register with us and feel proud to become a part of largest and the single stop solution for all your textbook solutions. Download your copy NOW!
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NCERT Solutions for Class 8 Chemistry Chapter-wise
NCERT Solutions for Class 8 Science Chapter 1 – Crop Production and Management
This chapter involves the study of yields and their respective administration. It also highlights various harvests, different climatic conditions, etc. Moreover, the type of nourishment is also stated in the chapter with respect to different crops. Gathering and capacity are also highlighted in this chapter.
NCERT Solutions for Class 8 Science Chapter 2 – Microorganisms: Friend and Foes
There are various types of microorganisms present on this planet. They all have their own characteristics. After completing this chapter, the students will be able to answers questions like Where do microorganisms live?
NCERT Solutions for Class 8 Science Chapter 3 – Synthetic Fibres and Plastics
This chapter states the meaning of artificial synthetic fibers and plastics which are largely used in our daily life for many purposes. Moreover, it will explain the types of synthetic fibers and plastics along with characteristics of both. Moreover, the chapter puts the concept of the environment along with the application or usage of such materials.
NCERT Solutions for Class 8 Science Chapter 4 – Materials: Metals and Non-Metals
Materials include two major segments viz. Metals and Non-Metals. This chapter will unveil the world of metals and non-metals by explaining their properties and applications. After studying this chapter, the students will be able to classify the components into metals and non-metals considering their respective property along with the respective uses of metals and non-metals.
NCERT Solutions for Class 8 Science Chapter 5 – Coal and Petroleum
Coal and Petroleum are one of the largest used energy resources in any country. Though with the passage of time, their use is diminishing due to a movement towards conventional sources of energy. This chapter helps the students to know the Natural Gas as an asset and how it is being depleted due to high usage. Moreover, the students will be confronted with the term ‘Fossil Fuels’. Towards the end, it puts the topics of ill-effects of fossil fuels on the environment also.
NCERT Solutions for Class 8 Science Chapter 6 – Combustion and Flame
This chapter tries to explain the types of fuels being used in different work and places like at home, in vehicles, in factories, etc. Different sources of powers like Cow dung, coal, wood, charcoal, diesel, CNG, etc. are also highlighted. Use of flame becomes an important part of the discussion. Moreover, the students will come to know about the difference in the implications of burning different types of fuels. Detailed differentiation between the consuming of a flame and consuming of fuel is also stated in between the chapter.
NCERT Solutions for Class 8 Science Chapter 7 – Conservation of Plants and Animals
Conservation of Plant and Animals is a complex chapter to study. This chapter states the different human activities which are affecting the life of Plants and Animals along the various means to conserve them.
NCERT Solutions for Class 8 Science Chapter 8 – Cell: Structure and Functions
In general, cells are of two types – Plant Cell and Animal Cell. There are different characteristics of both of them making them different on various grounds. Moreover, the chapter talks about the discovery of the cell, its properties, and composition.
NCERT Solutions for Class 8 Science Chapter 9 – Reproduction in Animals
Continuation of any species completely depends on the process of reproduction. This chapter specifies how various animals reproduce. Various modes and procedures of reproduction are explained in detail in this chapter for a better understanding of the students.
NCERT Solutions for Class 8 Science Chapter 10 – Reaching the Age of Adolescence
Adolescence is the time period in any person’s life in which he/she undergoes various changes both physically and mentally. This chapter shows the changes in the various organs during this period and the role of hormones. Moreover, students will come to know about the conceptive organs of the body.
NCERT Solutions for Class 8 Science Chapter 11 – Force and Pressure
Force and pressure are the most important concept in physics form theoretical as well as practical means. After studying this chapter, the students will be able to understand the future complex problems.
NCERT Solutions for Class 8 Science Chapter 12 – Friction
Backing or the opposition power or force constitutes Friction. It has become an essential part of today’s education system. This chapter allows the students to know about the application of friction in everyday life. In this chapter, students will find many diagrams and images for a better understanding of the topic.
NCERT Solutions for Class 8 Science Chapter 13 – Sound
In the initial stage of the chapter, the chapter talks about the distinction between music and noise. Later, the chapter starts to focus on Noise Pollution showing its impact on the environment. Moreover, it highlights certain means to minimize the noise in the environment. A better understanding of the topic will help the students to gain much knowledge about this topic in the future.
NCERT Solutions for Class 8 Science Chapter 14 – Chemical Effects of Electric Current
This chapter tries to move forward with the concept of nature of element and its relation with the current flow. Moreover, it analyses the behavior of various materials with respect to current flow. It provides a detailed analysis of the passing of electricity through conductors and insulators.
NCERT Solutions for Class 8 Science Chapter 15 – Some Natural Phenomena
Moving a little away from general science topics, this chapter talks about the concept of lightning and earthquakes. It also discusses the related concepts like the magnitude of earthquake and lightning, the reasons behind both of them, etc.
NCERT Solutions for Class 8 Science Chapter 16 – Light
Everyone knows that the speed of light is the fastest. In this chapter, students will come to know about the various properties and application of light. Towards the end, the chapter also talks about the Braille system used by the visually-impaired people.
NCERT Solutions for Class 8 Science Chapter 17 – Stars and the Solar System
There are various celestial bodies in the solar system. This chapter helps the students to learn about various celestial bodies like the moon. Moreover, we would learn about the properties of such bodies.
NCERT Solutions for Class 8 Science Chapter 18 – Pollution of Air and Water
Anything that contaminates the purity of a substance, that particular element is known as ‘Pollutant’. In this chapter, the students would be able to know about the pollutants of air pollution and water pollution. The chapter ends with various suggestions to avoid such pollutants.
Class 8 Science: Chapter-wise NCERT Solutions
The importance of NCERT Science concepts cannot be denied in our in-depth understanding of nature and human anatomy. Class 8 Science that includes chapters related to all the three major domains under Science: Physics, Chemistry and Biology. The topics explained in Class 8 Science CBSE syllabus involves a lot of concepts related to daily life. Students must try to understand each chapter properly and this is where NCERT Solutions come into play. However, you must source NCERT Solutions for Class 8 Science from trustworthy websites that include chapter-wise solutions and are available for free download. As per the latest CBSE syllabus, the NCERT textbook for Class 8 Science includes 18 chapters:
- Crop Production and Management
- Microorganisms: Friend and Foe
- Synthetic Fibres and Plastics
- Materials: Metals and Non-Metals
- Coal and Petroleum
- Combustion and Flame
- Conservation of Plants and Animals
- Cell- Structure and Functions
- Reproduction in Animals
- Reaching the Age of Adolescence
- Force and Pressure
- Chemical Effects of Electric Current
- Some Natural Phenomena
- Stars and the Solar System
- Pollution of Air and Water
Students will be benefited from the chapter-wise NCERT Solutions for Class 8 Science textbook problems during their exam preparation. The latest NCERT syllabus of Class 8 Science designed for CBSE students involves chapters that contribute heavily towards building the subject foundation needed for higher studies. Students interested in professions closely related to the fields of Science must pay attention to Class 8 Science chapters. Class 8 exam is an important milestone that prepares students for the Class 10 board exam. Science is one of the most interesting subjects for many students. If students prepare well for the subject, scoring in a Science paper is not such a difficult task.
Class 8 Science CBSE syllabus prescribed as per the guidelines by NCERT (National Council of Educational Research and Training) includes important concepts. In chapters like Cell- Structure and Functions, Reproduction in Animals and Reaching the Age of Adolescence, basics about the human body and mammals, in general, are taught. Students can learn about chemical properties of a matter in chapters like Synthetic Fibres and Plastics, Materials: Metals and Non-Metals, Coal and Petroleum, Combustion and Flame, etc. topics that involve the study of Physics are Force and Pressure, Friction, Sound etc. Hence, students are provided with basic knowledge on important Science topics in Class 8 Science NCERT textbook. Download the free PDF version of NCERT Solution for Class 8 Science and clear all your doubts right away!
Tips to score well in Class 8 Science Exam Paper
Science is one of the most important subjects during school studies. Moreover, the subject finds its application in various fields of studies and is one of the most opted streams of higher education. Hence, it is imperative for students to pay attention to Science concepts from a young age. Following are some of the tips to perform well in Class 8 Science CBSE exam:
- Follow a Systematic Study Plan: In order to score well in any paper, it is important to have a study routine devised in a way that it allows time for revision and focusing on chapters you are weak at.
- Refer NCERT Solution: For those who are finding it difficult to solve the NCERT textbook problems themselves can refer to NCERT Solutions and get all their doubts cleared. NCERT Solution helps them to write the answer without that clearly explains the concepts without making any mistakes.
- Revise Thoroughly: Students should never underestimate the importance of having a thorough revision of the chapters to achieve good grades in exams
- Take Proper Rest and Indulge in Recreational Activities: Along with studies, it is important to have time for proper rest and leisure activities. Do not overburden yourself with studies as it would unnecessarily increase your exam stress.
How many chapter?
Crop Production and Management
Microorganisms: Friend and Foe
Synthetic Fibres and Plastics
Materials: Metals and Non-Metals
Coal and Petroleum
Combustion and Flame
Conservation of Plants and Animals
Cell- Structure and Functions
Reproduction in Animals
Reaching the Age of Adolescence
Force and Pressure
Chemical Effects of Electric Current
Some Natural Phenomena
Stars and the Solar System
Pollution of Air and Water
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