You will study 18 chapters in the NCERT class 8 science. The textbook can be divided into three main subjects which are chemistry which is dealt in chapters 3, 4, 5 and 6 , biology which is covered in chapters 1, 2, 7, 8, 9 and 10 while the rest of the chapters deal with topics of physics.
How to use NCERT solutions for class 8 science?
List of chapters covered with NCERT solutions for class 8 science
Solutions of NCERT class 8 science chapter 2 Microorganisms Friend and Foe In Microorganisms: Micro organisms are used to make curd, develop medicines and vaccines etc. Not all micro organisms are good. Some of them are even harmful to human health also. The chapter deals with good and bad aspects of micro organisms. Ieresting fact about micro organisms, their use and more will be taught here.
CBSE NCERT solutions for class 8 science chapter 3 Synthetic Fibres and Plastics: The concept of natural and synthetic fibres are dealt with in this chapter. Other important topics which you will study in the solutions of class 8 NCERT science are acrylic, artificial silk, nylon, plastic, polyester, polymer, polythene, and rayon. There are 15 questions plus sub-questions in the exercises of the chapter. Solving all the questions are mandatory for scoring good marks in your class exams.
NCERT solutions for class 8 science chapter 4 Materials Metals and Non Metals: In the chapter, you will study the chemical and physical properties of metals and non-metals. This chapter will tell you that which one of them (metal) will react with water and which of them will react with acid. CBSE NCERT solutions for class 8 science contains 11 questions. Many interesting activities are mentioned in the chapter which you can perform with the help of your teacher.
Solutions of NCERT class 8 science chapter 5 Coal and Petroleum: Resources which are exhaustible are explained in this chapter. You will get to know, what they are, why we need them and how to decrease their usage. You will also study the coal, petroleum, natural gas, fossil fuel, etc. There are a total of nine questions mentioned in the exercise of class 8 chapter 5 coal and petroleum.
CBSE NCERT solutions for class 8 science chapter 6 Combustion and Flame: The chemical process of burning and the different types of flames are explained in the chapter. You will also get to know about the negative points of combustion like, unburnt carbon particles in the air are dangerous pollutants which cause respiratory problems. The solutions of NCERT class 8 science of this chapter contain 13 questions. These solutions can be viewed by clicking on the given link.
NCERT solutions for class 8 science chapter 7 Conservation of Plants and Animals: You will learn all about conserving plants and animal in this chapter of class 8 science. You will also learn about a few important terms like biodiversity, biosphere, reserve, deforestation, desertification, ecosystem, etc. At the end of the chapter, questions are generally given. The CBSE NCERT solutions for class 8 science for these and other questions of the chapter have been answered in the chapter.
Solutions of NCERT class 8 science chapter 8 Cell Structure and Functions: In this chapter, you will study the structural and functional unit of life that is the cell. Also, you will get to know different types of cells in the NCERT class 8 science solutions. In the higher classes, you will study more about types of cells and their functions.
CBSE NCERT solutions for class 8 science chapter 9 Reproduction in Animals: You will learn how reproduction takes place in the different living organisms, what are the different modes of reproduction and such. This is a very important chapter whose concepts will be useful in the higher classes too.
NCERT solutions for class 8 science chapter 10 Reaching the Age of Adolescence: Puberty and adolescence are explained here. The role of hormones during the changes that happen in the age of adolescence is also to be studied in chapter 10 of class 8 science NCERT. Voice change is one of the examples for this. You must have noticed this with you or your friends.
Solutions of NCERT class 8 science chapter 11 Force and Pressure: Force, types of force like contact force, electrostatic force, magnetic force etc are all dealt in this lesson. The concepts of force are explained in detail here. This is an important chapter which will help in the higher classes.
CBSE NCERT solutions for class 8 science chapter 12 Friction: Real-life examples of friction and factors affecting friction are explained in the chapter with the help of many activities. At the end of the chapter, there are many exercises with questions that may be asked in the exam too. The solutions of NCERT class 8 science chapter 12 friction will help you in answering these questions and scoring well.
NCERT solutions for class 8 science chapter 13 Sound: What is sound and how it travels through a different medium is explained in this chapter. Questions related to noise pollution which causes health problems to human beings as well as other organisms are dealt with here. The preventive measures of noise pollution are also mentioned in this chapter.
Solutions of NCERT class 8 science chapter 14 chemical effects of Electric Current: Most of the liquids that conduct electricity are solutions of acids, bases, and salts. The battery that we use utilizes chemical energy to produce an electric current when connected in a circuit. Electroplating is an interesting example of the chemical effect of current which is studied in this chapter. These and more such interesting activities with examples are taught here.
CBSE NCERT solutions for class 8 science chapter 15 Some Natural Phenomena: Study of lightning, earthquakes, how to minimize the destruction caused by these phenomena are some interesting topics discussed in the chapter. The science behind lightning arresters set above many buildings is also explained here.
NCERT solutions for class 8 science chapter 16 Light: You will learn about the angle of incidence, angle of reflection and the structure of our eye etc. Many interesting experiments are given in this lesson to explain the concepts to students.
Solutions of NCERT class 8 science chapter 17 Stars and the Solar System: Topics like Space, planets, comets, constellations and the solar system are explained here. You will have a total of 16 questions in this chapter and can find the answers by using the given link.
CBSE NCERT solutions for class 8 science chapter 18 pollution of air and water: The very last chapter of NCERT class 8 science is 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 main aim of the chapter is to create awareness about air and water pollution as well as preventive measures against it.
2. When a glass rod is rubbed with a piece of silk cloth the rod
(a) and the cloth both acquire positive charge.
(b) becomes positively charged while the cloth has a negative charge.
(c) and the cloth both acquire negative charge.
(d) becomes negatively charged while the cloth has a positive charge.
8. Explain the process of formation of petroleum.
4. Compare LPG and wood as fuels.