Chapter-wise important questions from irodov relevant to JEE syllabus ?

February 28, 201539 Insightful Publications

**NCERT Class 8 Maths & Science Solutions:** A good resource for Maths or Science, NCERT Class 8 solutions can help students prepare effectively for their CBSE Class 8 term and final exams. Keeping that requirement in mind, we have provided detailed Maths and Science NCERT solutions for Class 8 free PDF in this article. The NCERT Solutions for Class 8 Maths and Science provided here have been carefully created by the top academic experts and professional educationalists at Embibe.

Students should focus on their CBSE Class 8 studies because this class lays the foundation for higher classes. In addition, CBSE Class 8 syllabus is closely related to Class 9 and 10. So, every CBSE Class 8 student needs to grasp every concept covered in their NCERT Class 8 books. To help students with their preparation, we are providing students with NCERT solutions for Class 8 in PDF. This way, students can refer to these answers anytime they want.

The **CBSE Class 8 Science Syllabus** has 18 chapters covering Physics, Chemistry, and Biology. The name of the chapters and links to the chapter-wise NCERT solutions for Class 8 Science PDF are as under. Students can click on any chapter and download these solution files.

**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 the Solar System****Chapter 18 – Pollution of Air and Water**

The NCERT solutions for Class 8 Science cover all the questions from these 18 chapters.

CBSE NCERT Solutions | Class 8 Science Chapter-wise PDF |

The **CBSE Class 8 Maths Syllabus** comprises 16 chapters. Students can download **Maths NCERT Solutions** PDF by clicking on the respective chapter names below:

**Chapter 1 – Rational Numbers****Chapter 2 – Linear Equations in One Variable****Chapter 3 – Understanding Quadrilaterals****Chapter 4 – Practical Geometry****Chapter 5 – Data Handling****Chapter 6 – Squares and Square Roots****Chapter 7 – Cubes and Cube Roots****Chapter 8 – Comparing Quantities****Chapter 9 – Algebraic Expressions and Identities****Chapter 10 – Visualizing Solid Shapes****Chapter 11 – Mensuration****Chapter 12 – Exponents & Powers****Chapter 13 – Direct and Inverse Proportions****Chapter 14 – Factorization****Chapter 15 – Introduction to Graphs****Chapter 16 – Playing with Numbers**

These NCERT solutions for Class 8 Maths provide the most detailed and step-by-step solutions for all 16 chapters.

CBSE NCERT Solutions | Class 8 Maths Chapter-wise PDF |

NCERT Solutions for Class 8 English | Soon |

NCERT Solutions for Class 8 Hindi | Soon |

NCERT Solutions for Social Science | Soon |

Also Download,

NCERT Solutions for Class 12 |

NCERT Solutions for Class 11 |

NCERT Solutions for Class 10 |

NCERT Solutions for Class 9 |

NCERT Solutions for Class 7 |

NCERT Solutions for Class 6 |

NCERT Solutions for Class 8 helps students understand how to approach and solve complex questions. Students can refer to these answers whenever students come across any doubts. Apart from these, these solutions bring students a lot of benefits:

- If students get stuck anywhere while solving their NCERT questions, students can refer to the PDF solutions and easily clear their doubts.
- The solutions will help students get a better understanding of various concepts.
- The step-wise solutions for solving these questions will help students improve their problem-solving abilities. In addition, this will assist students in approaching a specific problem to solve it in a timely manner.
- NCERT Solutions for Class 8 will come in handy when students work on their homework and assignments.
- As Class 8 is considered important for concept building for higher studies, these solutions will aid students always.
- It will be easier for students to revise the syllabus if students have these solution files with students.

**Download Complete Class 8 Study Material**

CBSE Class 8 Maths and Science comprises 80 marks in the final exam and 20 marks in the Internal Assessment. Let’s look at the detailed marking pattern for CBSE Class 8 exams:

**Exam Pattern for Class 8 Maths**

Sections | Marking Scheme |

Section-A | 20 questions of 1 mark each |

Section B | 6 questions of 2 marks each |

Section C | 8 questions of 3 marks each |

Section D | 6 questions of 4 marks each |

Total | 40 questions carrying 80 marks |

**Exam Pattern for Class 8 Science**

Sections | Marking Scheme |

Section-A | Objective type questions of 1 mark each |

Section-B | Short answer type questions of 3 marks each |

Section-C | Long answer type questions of 5 marks each |

Total | 80 marks |

Internal Assessment is divided into the following activities as given:

Periodic Test | 10 marks |

Notebook Submission | 5 marks |

Subject Enrichment Activities | 5 marks |

Total | 20 marks |

**Download** – **Algebra Formulas for Class 8**

Now that students have the NCERT Solutions for Class 8 and the detailed marking pattern let’s look at how students can prepare for their examinations.

Embibe is a perfect platform where students can grab all the important Class 8 study materials for free. We have professional experts who consistently work on coming up with the latest preparatory materials in order to help students. Students can find the links to Class 8 study materials below:

Students must take their CBSE Class 8 preparation seriously. They must read the NCERT books thoroughly and understand each and every concept. Moreover, students must read each and every example carefully in order to understand the concept well. They should compulsorily solve the questions given at the end of every chapter. Some effective preparation tips for acing in CBSE Class 8 are given below:

- Be thorough with the syllabus before starting exam preparation
- Have a complete understanding of the test format, number and type of the questions asked in the test.
- Analyse the important points and determine the important topics and question types from the daily assignments, notes, hand-outs etc. that their teacher gives at school.
- Study regularly and ensure that students understan all the topics clearly and clarify all the doubts with their teacher as students cover a topic.
- Break down larger topics into smaller chunks so that students can study easily. Test theirself after covering each topic.
- Do not put aside easy topics. These topics will help students score well in their exam.
- Take a quick review before students take the test. This will give students confidence and ensure that the topics are fresh in their mind.

NCERT Class 8 solutions provided here will help students accomplish this and many other tasks.

The chapter-wise summary of the CBSE NCERT Science textbook is given below:

This chapter discusses rural practices connected to how the food is being produced through agricultural practices. The chapter discusses various harvest, their climatic and nourishing necessities and the preparation of soil for comprehensive improvement of the crops. In India, crops are mainly categorized into two types based on the season, i.e rabi and Kharif. The following points related to crop production are explained in detail in this chapter.

- Preparation of soil
- Sowing
- Adding manure and fertilizers
- Irrigation
- Protecting from weeds
- Harvesting
- Storage

This chapter explains various destructive and valuable kinds of microbes and their significance in different areas. It discusses topics like the places where microorganisms live, microorganisms and us, harmful microorganisms, nitrogen fixation, food preservation and nitrogen cycle are some of the topics covered in the chapter. It also explains how microorganism plays an important role in our lives through various examples like:

- Preparation of curd and bread
- Commercial use of microorganism
- Medicinal use of microorganism
- Vaccination
- Improving soil fertility

This chapter gives us an idea about synthetic fibres and their type (rayon, nylon, polyester and acrylic). It also dwells on the characteristics of synthetic fibres are explained in detail. Moreover, the chapter introduces students to plastics, their properties and the effect it has on our environment.

This chapter deals with the differences between metals and non-metals, their properties, and their applications. The chapter then goes in-depth into the physical properties of metals and non-metals, the chemical properties of metals and non-metals, and various uses of metals and non-metals.

This chapter discusses various natural resources and their classification. It explains the formation of fossil fuels such as coal, petroleum and natural gas from the dead remains of living organisms that lived millions of years ago. It further describes how coke, coal tar and coal gas are formed from coal. This chapter further describes the refining of petroleum and explains the formation and extraction of natural gas. The chapter ends with a final note that natural resources are limited so we should use them judiciously.

Students will learn about different sorts of fuels that are utilized for different purposes at homes, in industries and for running automobiles. Combustible fuels like cow dung, wood, coal, charcoal, petroleum, diesel, Compressed Natural Gas (CNG) and so on are introduced. The chapter beautifully explains these concepts with the help of activities. It also provides measures to control the fire. Then, the concept of flame and its structure is explained. Finally, the chapter discusses the topic of fuel, fuel efficiency and the harmful effects of burning the fuel.

This chapter discusses deforestation and its various cause, consequences of deforestation, how to conserve forests and wildlife and similar topics. It further explains about Biosphere reserve, flora and fauna, wildlife sanctuary, endemic species, national park, migration, red data book, recycling of paper and at the end reforestation.

Chapter 8 explains the inside and out information about the primary unit of life – cells. Students will learn that the cell is the smallest living part of an organism, which exhibits a variety of shapes and sizes. The number of cells varies from organism to organism. Moreover, cell structure and function, as well as different parts of the cell, are explained in detail:

This chapter explains the modes and procedure of reproduction in creatures i.e sexual and asexual reproduction, through which animals reproduce. The topic of sexual reproduction is described in detail with a detailed description of the male reproductive organs, female reproductive organs, fertilization, development of the embryo, viviparous and oviparous animals. Finally, the chapter explains asexual reproduction.

The chapter starts with an explanation of Adolescence and Puberty. It then introduced the changes that happen to the human body during puberty such as:

- Increase in height
- Voice change
- Change in body shape
- Increased activity of sweat and sebaceous glands
- Development of sexual organs
- Reaching mental, intellectual and emotional maturity

The chapter then goes on to detail the topics of the reproductive phase of life in humans, secondary sexual characters, the role of hormones in initiating reproductive function, sex determination, other hormones except for sex hormones, the role of hormones in completing the life history of insects and frogs, reproductive health etc.

This chapter discusses an important topic of Physics. Students will find this chapter interesting as it contains lots of activities that help to understand the concepts. It explains how a force arises from the interaction between two objects. Then it explains that a force can be a push or a pull and that it can change the state of motion or shape of the object it acts upon. It further explains topics such as contact forces, non-contact forces, pressure, the pressure exerted by liquids and gases, atmospheric pressure etc. in detail.

This chapter discusses the force of friction, factors affecting friction, how friction can be increased and decreased. Finally, the chapter also explains the topic of fluid friction is described.

Sound plays an important role in human lives as it helps us to communicate with each other. This chapter gives students a complete idea on topics such as how sound is produced, how it travels, how we hear it, why some sounds are louder.

In this chapter, we will discover that some metals like copper and aluminium conducts electricity and are therefore called conductors while materials like rubber, plastic, and wood don’t conduct electricity and are therefore known as insulators.

This chapter throws light on many wonderful phenomena of nature such as lightning and earthquake. It explains the causes, impacts, magnitude and properties of lightning in detail.

The chapter talks about the key properties, impacts, and applications of light. Further, this chapter gives information about regular reflection, diffused reflection, laws of reflection, etc.

This chapter elaborates on what are celestial objects, their position, structure and centrality. Then it discusses the moon, periods of the moon its position in the planetary system and details about its surface.

This chapter provides awareness of the harmful changes that are taking place in our environment due to air and water pollution and its adverse effect on human lives. The chapter starts with air pollution and explains how air gets polluted. Then as an example, it describes the impact of air pollution on the Taj Mahal. Then, the chapter elaborates on the concept of the greenhouse effect and methods to reduce air pollution. After that, it moves on to the topic of water pollution and how water gets polluted. Finally, it describes the methods by which water is purified and water pollution can be controlled.

At Embibe, students can take CBSE Class 8 Tests for Science and Maths. These mock tests are available for free. The resources will be of great help to students in their preparation for not only the Class 8 exam but also other competitive exams like the Olympiads. So, make the best use of these resources.

The chapter-wise summary of the CBSE NCERT Maths textbook is given below:

This chapter teaches properties of whole numbers, real numbers, integers, rational numbers and natural numbers – independent, associative and closure. Further, it deals with the role of zero and one, multiplication over addition as well as the representation of Rational Numbers on the number line, along with searching for Rational Numbers between two Rational Numbers. The topics of additive identity (0) and multiplicative identity (1) are also covered in this chapter. There are 2 exercises in this chapter, which contain questions from all the topics present in the chapter.

This chapter discusses linear expression in only one variable and Linear Equations in One Variable. It comprises six exercises with a total of 65 questions in them. The chapter includes various concepts such as solving an equation of Linear Equations in One Variable, some of its applications, reducing equations to a simpler form and word problems related to Linear Equations in One Variable.

The chapter provides the students with a proper understanding of the quadrilaterals. It also covers different kinds of polygons, including triangles, quadrilaterals, pentagons, hexagons etc. Moreover, it contains 4 exercises to help students in understanding these shapes properly.

The chapter elaborates on the method of constructing a quadrilateral with various given parameters. It has 5 exercises dealing with different methods of constructing the quadrilateral. The first exercise deals with the construction of quadrilaterals when the length of four sides and a diagonal are given; the second exercise involves constructing quadrilaterals when two diagonals and three sides are given, and so on.

This chapter teaches students about the organisation and representation of data. Data Handling is the process of organising the data in a systematic method. Further, students learn to represent these data diagrammatically in various ways: as a pictograph, a bar graph, double bar graph, pie chart and histogram. Students will be then briefed about the concept of probability or likelihood. The chapter has 3 exercises.

This chapter deals with the concept of square number and the square root of a number as well as with properties of square numbers, interesting patterns that could be learnt using square numbers, finding square roots through various methods, finding the square of a number, Pythagorean triplets, Square roots of decimals and much more.

This chapter makes students familiar with various strategies to find out the cubes and cube roots of a number. Further, it explains finding the cubes of different numbers, some interesting patterns that could be learnt using cubes and finding the cube roots. The chapter has 2 exercises to help students to understand the basics of Cubes and Cube Roots in depth.

This chapter helps the students to understand the rise and decrease of percentages, market value, sales value, discount etc.; concepts that are useful in day to day life. It discusses simple interest, compound interest calculated half-yearly, quarterly, monthly or yearly, and much more. There are 3 exercises in this chapter.

Various terms, factors and coefficients related to Algebraic Expressions are discussed in this chapter. The basics of monomials, binomials and polynomials are also given in brief. Moreover, students learn the addition, subtraction and multiplication of Algebraic Expression as well as the concept of Identity. The chapter consists of 5 exercises.

The chapter has 3 exercises that help students to visualize solid shapes in different dimensions. The chapter deals with viewing 3-D shapes, Mapping the space around us, and learning about faces, edges and vertices. Further, it discusses Euler’s formula, which states that F + V – E = 2, where F is Faces, V is Vertices and E is Edges, along with its application.

Students will learn to solve problems related to perimeter and area of plane closed figures like quadrilaterals. Then, it discusses the surface area and volume of different solid shapes such as a cube, cuboid and cylinder. It has a total of 4 exercises.

In the chapter, different concepts including powers with negative exponents, laws of exponents, use of exponents to express the numbers in standard form and comparison of extremely large numbers with small numbers are explained. The chapter consists of 2 exercises.

This chapter contains 2 exercises that help students understand the concepts of direct proportion and inverse proportion.

Students learn to perform Factorization in this chapter. It covers factors of natural numbers and algebraic expressions, factorisation using identities and factorisation by regrouping terms. Further, the chapter deals with the division of algebraic expressions that includes division of a monomial by another monomial, division of a polynomial by a monomial etc. It consists of 4 exercises.

Students learn to represent different types of data with various kinds of graphs in this chapter. The different types of graphs such as bar graphs, pie graphs, line graphs and linear graphs are discussed. The chapter further helps the students in learning how to locate a point and coordinate in a graph. The chapter contains a total of 3 exercises that help the students in understanding the concepts of Graphs.

In this chapter, students explore the vast genre of numbers in detail. They learn to justify tests of divisibility. The chapter has 2 exercises that cover the topic of Playing with Numbers.

**Check Detailed CBSE Class 8 Syllabus**

**Q.1: What is the best way to prepare for Class 8 examinations?****Ans:** The best way to prepare for Class 8 examinations is to go through the chapters one by one. After students have completed one chapter, go through its questions. Once students have completed the entire syllabus, then students can take the subject-wise mock tests. This will surely help students score well in their examinations.

**Q.2: What is the correct procedure to solve the NCERT question?****Ans:** Experts advise students to go through the NCERT question. Try to solve using formulas or special methods taught in their classes. Students can also take the help of their NCERT books to solve this question. If students find any difficulty or get stuck, then students can refer to the NCERT solution file.

**Q.3: Can I rely on these Class 8 NCERT Solutions for my school examinations?****Ans:** Yes, these NCERT Solutions for Class 8 have been designed by adhering to all the latest CBSE guidelines. Therefore, students can rely on these solutions.

**Q.4: Are there any free Class 8 questions to practice?****Ans:** Yes, Embibe offers students Class 8 chapter-wise questions and subject-wise tests for free.

**Q.5: Where can I find the complete Class 8 NCERT solution for the NCERT book?****Ans:** Students can find the complete solutions for Class 8 as well as all books on the Embibe platform for free. Students can also find direct links to Class 8 NCERT notes, solutions, practice papers, mock tests, important questions, and much more.