Lakhmir Singh Solutions for Class 8 Science

Every student can learn but not in the same way. Class 8 is a stepping stone towards class 10 that decides the better future of a students’ career. Lakhmir Singh Solutions holds an important role as it is one of the reference books that help students to learn and understand things in a simple and lucid manner. The book is written in a simple language for the students to grasp the concepts without any difficulty. Lakhmir Singh Solutions for Class 8 science covers all 20 Chapters and the list is given below.

Each Chapter of Lakhmir Singh Solutions for Class 8 Science consist of different levels of questions so that students can test their learning extend by answering the questions

• Very short answer type questions
• Short answer type questions
• Long answer type questions
• Multiple-choice questions
• Higher-order thinking type questions

Chapter 1: Crop Production And Management

This chapter deals with the study of different practices of obtaining food for both plants and animals. Cereals like wheat, rice and pulses are called a crop. How they are produced, their types and agricultural practices followed by the farmers are also discussed in detail to know how food is produced on a large scale.

Chapter 2: Micro-Organisms: Friend And Foe

This chapter covers Micro-organisms and the uses of them to us in our daily lives. Micro-organisms are those which are too small to be seen without a microscope. Most of them are harmful and some of them are very useful too. The chapter discusses a various type of micro-organisms and their uses briefly.

Chapter 3: Synthetic Fibres And Plastics

The chapter explains briefly about the Synthetic fibres and their different types and also plastics.

Fibre is a thin thread-like strand from which cloth is made. They are of two types natural and synthetic fibre. Plastic is also made up of synthetic material. This chapter covers all the types of plastics and their properties which are used in our daily lives.

Chapter 4: Materials: Metals And Non-Metals

On the basis of properties, elements are classified into two categories they are Metals and Non-metals. The properties of non-metals are opposite to those of metals. This chapter deals with the characteristics, physical and chemical properties of both the metals and non-metals.

Chapter 5: Coal And Petroleum

This chapter describes briefly some exhaustible sources of energy like coal, petroleum and natural gas which are non-renewable. The natural fuels formed from the remains of living organisms buried under the earth long ago is called fossil fuels. The chapter covers the production of coal and petroleum and also their uses.

Chapter 6: Combustion And Flame

Combustion is a chemical process in which substance reacts with oxygen to give heat and light.

This chapter explains the chemical process of combustion and the type of flames produced during this process.

Chapter 7: Conservation of Plants And Animals

All the animals and plants should be protected in the natural environment where they are found. This process of keeping them safe and protecting from damage is known as conservation. The living organisms are found on land, in the atmosphere as well as in water bodies also. This chapter deals with how to conserve the plants and animals and also discusses the biggest threat happening to the eco-system and how they are created and also the prevention of this problem.

Chapter 8: Cell Structure And Functions

There are a large variety of organisms present around us. Their body is made up of tiny units called cells. They are structural and functional units of life. In this chapter, it deals with the basic part of cells and the role of these parts for the functioning of cells.

Chapter 9: Reproduction In Animals

The production of new organisms from the existing organisms of the same species is known as Reproduction. This ensures the continuity of life on earth. This chapter describes the types of reproduction happening in a living organism.

Chapter 10: Reaching The Age Adolescence

There is a different stage of levels a human being goes through. Babies grow and become children. Children grow and become adolescents and finally to adults. This chapter describes the changes taking place in both the female and male body after they become capable of reproduction.

Chapter 11: Force And Pressure

Push or pull of an object is called Force. The pressure is produced when the force acts on an object. This chapter discusses the various types of forces and effects and also covers the pressure exerted by solids, liquids and gases including atmospheric pressure.

Chapter 12: Friction

The force which always opposes the motion of one object over another object in contact with it is called Friction. This chapter deals with the types of friction, causes and the factors affecting the friction.

Chapter 13: Sound

A sensation felt by ear in the form of energy is called Sound. Each sound is different and depends upon the object which produces it. The role of sound in our daily life is inevitable. This chapter explains how the sound is produced, the characteristics and types of sounds.

Chapter 14: Chemical Effects of Electric Current

The chapter deals with the chemical effects of electric current when it is passed through a liquid. No chemical changes take place when electricity passed through solid but it happens to liquid. The effects are explained with lots of examples in this chapter.

Chapter 15: Some Natural Phenomena

This chapter describes the two naturally occurring phenomena called Lightning and Earthquake which causes a lot of damage to human life and property. It also covers the various steps taken to minimise the destruction caused by lightning and earthquakes.

Chapter 16: Light

Light makes us things to be visible and it is a form of energy to see things around us. Mainly the chapter deals with the light and its characteristics. How the image is formed and also the construction of a human eye.

Chapter 17: Stars And The Solar System

This chapter deals with the various celestial objects that exist in our universe. Celestial objects are those which exist in the sky. Planets are the largest celestial object that revolves around the sun

Chapter 18: Pollution of Air And Water

The unwanted or harmful substance that contaminates the environment is called pollutants. These pollutants are responsible for the huge cause of pollution like water and air. The presence of a high concentration of pollutants causes damages to both living and non-living things. This chapter explains the pollutants in detail and how they are caused and how they can be controlled.

Importance of Lakhmir Singh Solutions

The better understanding of concepts in a simple language always ranks in the first position. Lakhmir Singh solution is one of the reference books that students can hold during their examinations for scoring higher marks. The specific manner of writing the concepts makes a student for understanding each topic and also helps for clearing doubts.