NCERT Solutions for Class 8 Science
NCERT is on the priority list of recommendation of the Central Board of Secondary Education (CBSE). Here, you will find all the chapter-wise NCERT Solutions for Class 8 Science. It will help you to understand the subject and perform well in exams.
In CBSE Class 8, Science is divided into 3 parts – Physics, Chemistry, and Biology
Physics, a component of science is generally seen as one of the most difficult subjects due to the presence of a large number of practical questions. But the days are gone, when physics used to haunt students because here at Toppr, we have brought NCERT solutions for all the questions of all chapters.
Chemistry is one of those subjects which are equally important from academics as well practical point of view. NCERT is specially made to clear most of the topics of the syllabus of chemistry. NCERT solutions help the students to clear all the doubts regarding any chapter. Here, you will find all the solutions of NCERT questions.
Biology along with having a good weight in exams is equally important from experiment and practical point of view. In order to understand the chapters in biology, NCERT solutions play an important role. Here, on Toppr.com, you will find high quality of NCERT solutions prepared by a special team of experts. Moreover, the team is available to clear your doubts
On Toppr.com, we have a specialized team which prepares the NCERT solutions considering the needs and demand of the students. Moreover, the team is always available to take up the doubts of the students.
Download NCERT Solutions for other subjects here.
CBSE Class 8 Science NCERT Solutions Chapter-wise
- Chapter 1 – Crop Production and Management
- Chapter 2 – Microorganisms: Friend and Foe
- Chapter 3 – Synthetic Fibres and Plastics
- Chapter 4 – Materials: Metals and Non-metals
- Chapter 5 – Coal and Petroleum
- Chapter 6 – Combustion and Flame
- Chapter 7 – Conservation of Plants and Animals
- Chapter 8 – Cell – Structure And Functions
- Chapter 9 – Reproduction in Animals
- Chapter 10 – Reaching the Age of Adolescence
- Chapter 11 – Force and Pressure
- Chapter 12 – Friction
- Chapter 13 – Sound
- Chapter 14 – Chemical Effects of Electric Current
- Chapter 15 – Some Natural Phenomena
- Chapter 16 – Light
- Chapter 17 – Stars and Solar System
- Chapter 18 – Pollution of Air and Water
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.
Solved Questions for You
Question 1: Explain why some fibres are called synthetic.
Answer: Some fibres are called synthetic because they are not made from natural fibres. Instead, they are made by chemical processing of petrochemicals. The synthetic fibres are made up of very large units called polymers. Some of the synthetic fibres are – nylon, rayon, acrylon.
Question 2: Define adolescence.
Answer: Adolescence is the biological processes drive many aspects of growth and development, with the onset of puberty marking the transition from childhood to adolescence. Puberty is the transitional period between childhood and adulthood, during which growth of the body occurs, secondary sexual characters appears, fertility is achieved and profound physiological changes takes place. The normal range of onset is ages 8 to 14 in females and ages 9 to 15 in males.
Question 3: Explain how you can take care of your eyes.
Answer: Eyes are very sensitive organ of the human body and should be taken care of.
The following steps should be followed to take care of your eyes:
- Have a regular checkup with the eye specialist. If advised, use spectacles of proper power after an eye test.
- Do not rub your eyes. If there is irritation or dust particles enter your eyes, wash them with clean water.
- Regularly wash your eyes with clean water.
- Do not read a book too close or too far from the eye as it causes stress.
- Have a proper diet. Eat food items rich in vitamin A like raw carrots, broccoli and eggs.
- Avoid overexposure(example looking at sun) or underexposure(example reading in dark) of light to the eye.
Question 4: Explain how deforestation leads to reduced rainfall.
Answer: Plants and water bodies are the sources of most of the moisture and water vapour that constitutes the clouds that bring rain (in continental regions). Forests act as large transpiration zones and contribute greatly to the atmospheric moisture. In their absence, the water of the soil just seeps down or flows away and thus they cannot contribute to rain.
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