NCERT Solutions For Class 8 Science Updated for 2020-21
NCERT Solutions for Class 8 Science Free PDF Download
If you are searching for the most accurate NCERT Solutions for Class 8 Science then, you are in the right place. Study Path has provided chapter-wise NCERT Solution for Class 8 Science for free in PDF format. All these solutions are updated for 2020-21 as per the latest CBSE guidelines by our subject experts. It is essential to understand the concepts given in your NCERT textbook to score excellent marks in the exams. NCERT solutions provided by us help in that. Further, with these solutions beside you, gain your confidence to solve the various problems related to science.
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Chapter-wise NCERT Solutions for Class 10
Chapter 1 – Crop Productions And Managements
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 Effect of Electric Current
Chapter 15 – Some Natural Phenomena
Chapter 16 – Light
Chapter 17 – Stars And the Solar System
Chapter 18 – Pollution of Air and water
Study Materials For Class 8 Science
- NCERT Book For Class 8 Science
- CBSE Sample Papers for Class 8 Science
- CBSE Chapterwise Important Questions For Class 8 Science
Chapter-wise CBSE Class 8 Science Solutions
Chapter 1: Crop Production and Managements
In this chapter, you will learn how food is being produced by agricultural activities. Further, this chapter explains the two main categories of crops in India viz., Rabi and Kharif. Moreover, you will learn the basic practices of crop production such as
- Preparation of soil
- Adding manure and fertilizers
- Protecting from weeds
At the end of the chapter, you will also learn about animal husbandry in detail.
Chapter 2: Microorganisms – Friend and Foe
In this chapter, you will learn about microorganisms and how they play a crucial role in our life. Some examples where microorganisms play a key role are listed below:
- Making of curd and bread
- Production of medicines
- Increasing soil fertility
In the latter half of the chapter, you will get to know about the harmful microorganisms. Some examples where microorganisms harm us are
- cause different disease
- food poisoning
Further, the chapter explains the different methods of food preservation. The chapter concludes by explaining the nitrogen cycle.
Chapter 3: Synthetic Fibres and Plastics
In this chapter, you will learn about synthetic fibre and its types. Some of the types of synthetic fibre are rayon, nylon, polyester and acrylic. Along with this, the characteristics of synthetic fibres are explained in detail. Then, the chapter also explains about plastics, its properties and its effect in the environment.
Chapter 4: Materials: Metals And Non-metals
This chapter explains the physical and chemical properties of metals and non-metals. Physical properties include malleability, ductility, conductivity etc. Chemical properties include the reaction of metal and non-metal with water, oxygen, acids and bases. In the end, the chapter describes the displacement reactions and the uses of metals and non-metals.
Chapter 5: Coal and Petroleum
In this chapter, you will learn about the natural resources and their classification (exhaustible resources and inexhaustible resources). Moreover, you will learn about coal, petroleum and natural gas are fossil fuels. Further, you will get to know how coke, coal tar and coal gas are formed from coal. The chapter also explains the refining of petroleum. Further, the concept of natural gas is explained.
Chapter 6: Combustion and Flame
In this chapter, you will learn the definition of combustion and its various types. Further, the chapter explains the measures to control the fire. At the latter half of the chapter, the concept of flame and structure of flame is explained. The chapter concludes with the topic of fuel, fuel efficiency and harmful effects of burning the fuel.
Chapter 7: Conservation of Plants and Animals
This chapter explains deforestation and its cause, consequences of deforestation, how to conserve forests and wildlife. Moreover, it also explains about Biosphere reserve, flora and fauna, endemic species, wildlife sanctuary, national park, red data book, migration, recycling of paper. At the end, the chapter talks about reforestation.
Chapter 8: Cell – Structure and Functions
In this chapter, you will get to know that cell structure and its functions. The chapter starts by discussing the discovery of cells. Gradually, it explains the shapes and sizes and a number of cells vary from organism to organism. Further, the different parts of the cell such as cell membrane, cytoplasm, nucleus etc are explained in detail. The chapter concludes with the comparison of plants and animal cell.
Chapter 9: Reproduction in Animals
In this chapter, you will learn about the modes of reproduction i.e sexual and asexual reproduction. In the section of sexual reproduction, you will get to know about male reproductive organs, female reproductive organs, fertilization, development of the embryo, viviparous and oviparous animal. At the end of this chapter, asexual reproduction is explained in detail.
Chapter 10: Reaching the Age of Adolescence
In this chapter, you will learn about the changes that the human body undergoes during adolescence. The chapter starts with the explanation of Adolescence and Puberty. Then, the explain changes during puberty. The chapter further explains the topics of secondary sexual characters, the role of hormones in initiating reproductive function, reproductive phase of life in humans, sex determination, other hormones except for sex hormones, the role of hormones in completing the life history of insects and frogs, reproductive health.
Chapter 11: Force and Pressure
In this chapter, you will know how a force arises from the interaction of two objects. Then it explains that force can be a push or a pull. Moreover, it explains how force can change the shape of an object. Further, you will know about magnetic force, electrostatic force, gravitational force. After that, some topics such as pressure, the pressure exerted by liquids and gases, atmospheric pressure are discussed in detail.
Chapter 12: Friction
This chapter explains about the force of friction, factors affecting friction, how friction can be increased and reduced. At the end of this chapter, the topic of fluid friction is explained.
Chapter 13: Sound
Sound plays an essential role in our life. In this chapter, you will get to know about the sound produced by humans and other vibrating bodies. Further, you will learn about amplitude, time period, frequency of vibration. At the end, the chapter explains to you about the noise pollution and the measure to limit noise pollution.
Chapter 14: Chemical Effects of Electric Current
This chapter explains, why some liquids are a good conductor of electricity and some are a poor conductor of electricity. Further, it explains the chemical effects of electric current and electroplating.
Chapter 15: Some Natural Phenomena
This chapter you will learn about bout lighting and earthquakes. Further, you will know about types of charge and their interactions. Moreover, the chapter explains the steps to minimize the destruction of these natural phenomena.
Chapter 16: Light
In this chapter, you will learn the law of reflection, regular and diffused reflection, multiple reflections. Further, you will know that sunlight is known as white light and it consists of 7 colours. After that, the human eye is explained with a diagram. At the end, the chapter concludes by explaining how we should take care of our eyes and how visually impaired persons can read and write.
Chapter 17: Stars and the Solar System
In this chapter, you will study the celestial objects, the moon, stars and constellations. Moreover, the solar system and the feature of each planet is explained. At the end, some other members of the solar system such as asteroids, comets, meteors and meteorites, artificial satellites are explained.
Chapter 18: Pollution of Air and water
The chapter starts by discussing air pollution and how does air get polluted. Then it describes a case study on the impact of air pollution on Taj Mahal. Further, the concept of the greenhouse effect and methods to reduce air pollution are explained. Further, the chapter discusses the greenhouse effect. After this, the chapter explains water pollution and how water gets polluted. At the end, it explains the method through which water is purified and water pollution can be controlled.