## Class 9 NCERT Solutions for Maths & Science

NCERT Solutions for Class 9 are of great help if a student wants to score good marks in Class 9 Exams. Class 9 NCERT Solutions provided here are prepared by Subject Matter Experts at Swiflearn who have a lot of experience in teaching. These NCERT Solutions for Class 9 are explained in very simple language for better understanding. Class 9 NCERT Solutions will surely help you to score high marks in CBSE Class 9 Exams.

### NCERT Solutions for Class 9

**NCERT Solutions for Class 9 Maths**

**NCERT Solutions for Class 9 Science**

### NCERT Solutions for Maths & Science Class 9

Class 9 is one of the most crucial classes in a student’s life. This Class decides what the future of a student is going to be & what career options can a student explore accordingly. Your performance in Class 10th CBSE Board Exam depends upon Class 9 performance. Class 9 builds the right foundation by providing knowledge of all subjects for further studies. Scoring good marks in Class 9 is equally challenging. A student should be able to solve each and every Maths & Science questions present in NCERT Class 9 to score good marks in Exams.

### NCERT Solutions for Class 9 Maths

NCERT Solutions for Class 9 Maths has a total of 15 Chapters. All these chapters are very important to score good in CBSE Class 9 Maths Exam. These NCERT solutions will not only help you to solve all the problems but they are also a good revision tool that you can use before the exam.

Class 9 is one of the most crucial classes in a student’s life. This Class decides what the future of a student is going to be & what career options can a student explore accordingly. Your performance in Class 10th CBSE Board Exam depends upon Class 9 performance. Class 9 builds the right foundation by providing knowledge of all subjects for further studies. Scoring good marks in Class 9 is equally challenging. A student should be able to solve each and every Maths questions present in NCERT Class 9 to score good marks in Exams.

Swiflearn makes sure you get the best quality study material on the internet. The solutions are created by the best teachers in India. This leaves a profound impact on your performance and grades in school. Swiflearn has NCERT Solutions Class 9th core subjects i.e. Maths & Science. Swiflearn provides comprehensive answers that will help you understand each subject in a detailed manner.

Chapter 1: Number Systems

The first chapter solved in NCERT Solutions Maths Class 9 is the Number System. In this chapter, you will be learning the extended version of the number line and how to represent various types of numbers. With a total of 6 exercises, this chapter contains the representation of terminating/non-terminating recurring decimals on the number line (and successive magnification method). With the knowledge of rational numbers, you will also learn about the presentation of square roots of 2, 3 and other non-rational numbers. Laws of integral powers and rational exponents with positive real bases in Number Systems and Rationalization of real numbers. Get the NCERT Maths Class 9 solutions to help you to answer all the exercises given in the textbook for this chapter.

Chapter 2: Polynomials

The second chapter Polynomials and its solutions are explained in detail in NCERT Maths Solutions Class 9. This chapter explains the algebraic expression called polynomial and the detailed terminologies related to it very clearly. With a total of 4 exercises, you will be learning plenty of examples and definitions of a polynomial, degrees, coefficient, zeroes, and terms of a polynomial. Types of Polynomials – linear, constant, quadratic and cubic polynomials, monomials, binomials, trinomials. Factors and multiples, Remainder and factor theorems, factorization of polynomials using factor theorem. Get the NCERT Solutions of Class 9 Maths available as free PDF downloads to help you to solve the exercise problems.

Chapter 3: Coordinate Geometry

NCERT Maths Solutions Class 9 gives the answers to chapter 3 of the syllabus – Coordinate geometry. Chapter 3 has a total of 3 exercises for the students to solve. You will be studying the concept of the cartesian plane, coordinates of a point in this XY – plane, name, terms, notations and other terms associated with the coordinate plane. Abscissa and ordinate of points. You will learn to Plot a point in XY – plane and the process of naming it.

Chapter 4: Linear Equations in Two Variables

The Maths Class 9 NCERT Solutions elaborates about Chapter 4 – Linear Equations in Two Variables. This chapter will take you through the introduction to the equation in two variables of the type ax + by + c = 0. You will see a total of 4 exercises in this chapter with questions related to Proving a linear equation has an infinite number of solutions, plotting a linear equation on graph and justification of any point on the line.

Chapter 5: Introduction to Euclid’s Geometry

The answers to Chapter 5 are available in the NCERT Class 9 Math Solution. Euclid’s geometry chapter has some introduction to it as a part of the history of Indian geometry. Introduction to Euclid’s Geometry provides you with a way of defining the common geometrical shapes and terms. With a total of two exercises, you will be delving deeper into the relationship between axiom, postulates, and theorems.

Chapter 6: Lines and Angles

The NCERT Math Solution Class 9 answers all the questions of Chapter 6 – Lines and Angles. With three exercises in total, this chapter has theorems in Lines and Angles chapter which may be asked for proof. First is of type “If two lines intersect, vertically opposite angles are equal” and the second proof that is asked is “The sum of the angles of a triangle is 180”. The rest of the theorems are also explained in detail and questions will be asked based on all these theorems.

Chapter 7: Triangles

The Class 9 NCERT Maths Solutions also have answers to the chapter of triangles. In Chapter 7, Triangles of Class 9 Maths, you will study the congruence of Triangles in detail along with rules of congruence. With a total of 5 exercises, this chapter has two theorems that are given for proof and the rest will be asked in the form of applications/problems. Also, there are many more properties of triangles and inequalities in a triangle to learn in this chapter.

Chapter 8: Quadrilaterals

The 9th Class Maths book solutions for chapter 8 talks about Quadrilaterals. This Chapter on Quadrilaterals consists of only two exercises. However, it is a very interesting chapter with only one theorem for proof. Others will be asked in the form of application and conceptual questions. Questions in quadrilaterals are based on properties of quadrilaterals and combinations of it with triangles.

Chapter 9: Areas of Parallelograms and Triangles

Areas of Parallelograms and Triangles. This chapter explains the meaning of the area right from the introduction part. Areas of parallelograms and triangles and their combinations given in this chapter will be asked to prove in most of the questions. An example of the median may be used as a theorem in most of the questions.

Chapter 10: Circles

As per the syllabus of CBSE, Chapter 10 of Math Class 9 is about circles. The Class 9 NCERT Maths solutions provide answers to all the questions in this chapter. In this chapter, you will be learning some interesting topics like Angle Subtended by a Chord at a Point, Equal Chords and their respective distances from the Centre, the angle Subtended by an Arc of a Circle, Cyclic Quadrilaterals. The other important theorems prove to help solve questions based on a triangle, quadrilateral, and circles.

Chapter 11: Constructions

Chapter 11 of Class 9 Maths is about Constructions. The NCERT Math Solution Class 9 elaborates about these solutions. With a total of just two exercises, you will be learning two categories of constructions. One is the construction of bisectors of a line segment and angles of measure including 60, 90, 45, etc. The other category which you will be learning is the construction of a triangle with its base, sum/difference of the other two sides and one base angle & given perimeter and base angles given.

Chapter 12: Heron’s Formula

Chapter 12 of CBSE Class 9 Maths talks about Heron’s formula. The NCERT Maths solution for Class 9 gives the answers to all exercises of this chapter for students. What all you will be learning in this chapter is just the extension of concepts related to the area of a triangle. You will learn about the use of Heron’s formula to find the area of quadrilaterals, triangles, (dividing it into two triangles) and other types of polygons. Knowledge of formulae of plane figures is also imparted in this chapter which will help in doing questions.

Chapter 13: Surface Areas and Volumes

Students are well aware of surface areas and volumes as they have already studied mensuration in earlier classes. This chapter also has problems based on surface areas and volumes of cube, cuboids, cylinders, cones, spheres, and hemispheres. Conversion of one of the figures into another, comparing volumes is also given as an application of mensuration. The answers to all these problems are available in NCERT Solution Class 9th Maths.

Chapter 14: Statistics

NCERT Maths Book Class 9 Solutions provides you precise and elaborate answers to the problems on statistics. Description of statistics in this chapter is explained simply as the collection of data on different aspects of the life of people, which is useful to the State and interpretation and drawing of inferences from the data. With a total of four chapters, Introduction to statistics includes the presentation of data collected in a raw form. Building blocks of this chapter are a presentation of data in tabular form by grouping them in a regular interval, histogram or polygon, bar graph drawing. Topics like how to find the measure of central tendency mean and mode and median of raw data.

Chapter 15: Probability

With only one exercise, Math NCERT Solution Class 9 provides an answer to all the questions. The chapter Probability of Class 9 Maths is based on the frequency or the observation approach. Questions in this chapter 15 of Class 9 Maths are very interesting and are based on real-life or day to day incidents such as coin tossing, throwing dice, a deck of card probability and simple events. This chapter is quite fun to learn if you are curious enough to delve deeper.

### NCERT Solutions for Class 9 Science

If you are looking forward to pursuing higher education in Science, it becomes very significant to understand all the important concepts & theories of NCERT Science Class 9.

In the NCERT Solutions Class 9 Science, there are 5 chapters all of them are very important. Swiflearn offers the most correct NCERT Solutions for class 9 science that will make you understand its concepts & will help you in higher studies.

Chapter 1. Matter in Our Surroundings

Class 9 Science Chapter 1 sets the foundation of chemistry. it’s very important to have a better understanding of this chapter. Solutions of exercise: Matter in Our Surroundings, have been explained in detail by Swiflearn. These are going to help you understand the basic concepts of the subject. In this chapter, you will surely be able to relate chemistry with real life. This chapter tells how different matters change their states under different temperatures and pressures. Read the answers, understand and then try to attempt these on your own.

NCERT Solutions for Class 9 Science Chapter 1 includes intext exercise 1, 2, 3, 4 and an end exercise. It contains a total of 9 questions in its end exercise. Most of the questions are application based and few are memory-based questions to test your application skills and cognizance.

Chapter 2. Is Matter around Us pure

Chapter 2 of NCERT Solutions of Class 9 Science is about “Is Matter Around Us Pure?” This chapter has been carried forward from the first chapter and it talks about various methods of separation and physical and chemical changes. The chapter explains the types of mixtures and solutions. There are various experiments conducted to explain various types of components of a solution and mixtures. So after understanding this chapter, you will be able to distinguish matter into mixtures and pure substances. For this chapter also question papers are solved on Swiflearn which will help you to prepare better for your exams. Diagrams and flowcharts are given to help you clear your concept regarding this chapter. NCERT Solutions for Class 9 Science Chapter 2 includes Intext Exercise 1, 2, 3, 4 and an End Exercise. It contains a total of 11 questions in its end exercise. This chapter includes most of the application and practical based questions to test your understanding of the chapter.

Chapter 3. Atoms and Molecules

NCERT Class 9 Science chapter 3 has good weightage in the examination. Every year minimum 3-4 questions are being asked from this chapter in almost all school examinations. In chapter 3, you will learn about Atoms and Molecules. This chapter includes Mole Concept also which you will study in class 11 also. So, this chapter builds the foundation of Mole concept for you. It’s very important for you to clearly understand the basics of Mole Concept to solve all the numerical problems based on this topic. You will also get to know laws of chemical combination, symbols of elements etc. On Swiflearn, you will get all solved questions of NCERT by experts. The chapter falls under Chemistry, so there are many diagrams to help you understand the concepts. You can go through the text and then check out the solved questions to get a vivid idea of how the questions are framed in the examination.

NCERT Solutions for Class 9 Science Chapter 3 includes Intext Exercise 1, 2, 3, 4, 5 and an End Exercise. It contains a total of 11 questions in its end exercise. This chapter includes application and memory-based questions to test your application skills and cognizance.

Chapter 4. Structure of the Atoms

Chapter 4 also falls under Chemistry and it is on the “Structure of Atom”. It is a very interesting chapter if you understand it properly. If you are planning to pursue Science for your higher studies, then what you learn here will benefit you in the long run. You will get NCERT Solutions for Class 9 Science by experts on Swiflearn for this chapter too. This chapter involves some basic mathematical calculations and different theories about the structure of atoms which is why it is very scoring. If you can grasp this chapter well, you will be able to score better in science paper. Also, keep practising the atomic structure frequently or else you will forget the theories related to atomic structure. This chapter is an important chapter for you from an exam perspective also as it includes many important concepts such as Neutrons, Protons, Isotopes, Valency etc.

NCERT Solutions for Class 9 Science Chapter 4 includes Intext Exercise 1, 2, 3, 4, 5, 6, 7 and an End Exercise. It contains a total of 19 questions in its end exercise. This chapter includes application and memory-based questions to test your understanding of the chapter.

Chapter 5. The Fundamental Unit of Life

The 5th chapter -The Fundamental Unit of Life is related to Biology and it is the first chapter dealing with Biology in your syllabus. This chapter teaches you about cells. The cell structure is also explained in this chapter. Both animal and plant cells are explained with elaborated diagrams. For this chapter as well, you will get all NCERT Solutions for Class 9 Science on Swiflearn.

Class 9 Science NCERT Solutions of Chapter 5 includes Intext Exercise 1, 2, 3 and end exercise. It contains a total of 11 questions in the end exercise. This chapter includes analysis and memory-based questions to test your analysis skills and cognizance.

Chapter 6. Tissues

Your 6th chapter of NCERT Science Textbook is based on Tissues. Different types of tissues have been explained in this chapter. You will get questions from this chapter in the Olympiad also. So, you need to have a very good understanding of this chapter as it will not only build your foundation for the biology subject, but questions will be asked in your final examination and Olympiad as well. Animal and Plant tissues have been explained in detail. You will have to understand a few diagrams to know about the different kinds of tissues in a plant and animal body.

NCERT Solution Class 9 Science of Chapter 6 includes all Intext exercises and end exercises for you.

Chapter 7. Diversity in Living Organisms

Chapter 7 is also a part of Biology and it is called Diversity in Living Organisms. You can see many living organisms around you, and you must have noticed the huge diversity in plants and animals (or living organisms). So, in this chapter you will get to know about the classification of organisms. This chapter explains to you about the hierarchy in the plant and animal kingdom. How they are different from each other and their ways of life are explained through this chapter.

NCERT Solution Class 9 Science of Chapter 7 includes all Intext exercises 1, 2, 3, 4, 5, 6 and end exercise for you. The end exercise includes solutions to all 6 questions. These all questions are memory-based questions to test your cognizance.

Chapter 8. Motion

With chapter 8 you will be introduced to Physics. In this chapter you will learn uniform motion and non-uniform motion. You will also understand the concept of speed and direction of motion. After understanding this chapter, you will be able to understand that all objects on the earth are in motion as the earth is constantly in motion. NCERT Solution Class 9 Science of Chapter 8 includes all Intext exercises 1, 2, 3, 4, 5 and end exercise for you. The end exercise includes solutions to all 10 questions given in your NCERT Textbook. These all questions are based on your application skills, numerical skills and analysis skills.

Chapter 9. Force and Laws of Motion

You have studied the concept of Force in class 8, now in class 9 you will study it in depth. You will learn about balanced and unbalanced forces. You will understand all three laws of motion and will get to know physicist Galileo Galilei. This chapter will enhance your conceptual understanding of Force and Motion. NCERT Solution Class 9 Science of Chapter 9 includes all Intext exercises 1, 2, 3 and end exercise and additional exercise for you. The end exercise includes solutions to all 18 questions given in your NCERT Textbook. These all questions are based on your application skills, numerical skills and memory-skills.

Chapter 10. Gravitation

You must have studied in class 8 about Newton’s dilemma: why does the apple always fall down from the tree? In this chapter of class 9, you will understand more about gravitational force. It is a very important chapter related to Physics. This chapter will give you a vivid idea about how gravitational force works. There are quite a few numerical in this chapter. So, you will require regular practice to score full marks in them. NCERT Solution Class 9 Science of Chapter 10 includes all Intext exercises 1, 2, 3, 4, 5 and end exercise for you. The end exercise includes solutions to all 22 questions given in your NCERT Textbook. These all questions are based on your numerical abilities, application skills, and memory-skills.

Chapter 11. Work and Energy

In this chapter, you will understand scientific conception of work and different types of energy. The chapter includes many numericals also so it will require your mathematical skills as well. You need to practice the questions daily. These numericals are really very easy if you understand them and practice them on a daily basis. NCERT Solution Class 9 Science of Chapter 11 includes all Intext exercises 1, 2, 3, 4 and end exercise for you. The end exercise includes solutions to all 21 questions given in your NCERT Textbook. These all questions are based on your numerical abilities and application skills.

Chapter 12. Sound

You must have heard many types of sound and an echo as well. But have you ever thought of how it produces and travels? This chapter will take you to the journey of these thoughts and will give you answers to these as well. You will understand the concept of echo, propagation of sound waves, reverberation etc. NCERT Solution Class 9 Science of Chapter 12 includes all Intext exercises and end exercises for you. The end exercise includes solutions to all 22 questions given in your NCERT Textbook. These questions will test your understanding ability and numerical abilities.

Chapter 13. Why Do We Fall Ill

In this chapter you will understand the significance of health, acute and chronic diseases, causes of diseases etc. After reading this chapter, you will understand the value of hygiene for our good health. NCERT Solution Class 9 Science of Chapter 13 includes all Intext exercises and end exercises for you. The end exercise includes solutions to all 6 questions given in your NCERT Textbook. These questions will test your understanding ability and memory skills.

Chapter 14. Natural Resources

You must have heard about the water scarcity in Bangalore, Chennai, Rajasthan and Qatar. You must have thought of many solutions also regarding the problem. But you can’t arrive at a correct and practical solution without proper understanding of all the natural resources. So, this chapter will give you a better understanding of all-natural resources. In this chapter you will learn about the role of atmosphere in climate control, different natural resources, carbon cycle, nitrogen cycle etc. NCERT Solution Class 9 Science of Chapter 14 includes all Intext exercises and end exercises for you. The end exercise includes solutions to all 6 questions given in your NCERT Textbook. These questions will test your understanding ability, analysis skills and memory skills.

Chapter 15. Improvement in Food Resources

In this chapter, you will get to know about nutrients supplied by air, water and soil, crop production, crop production management, fertilizers, manure, storage of grains, animal husbandry, the nutritional value of food, fish production and beekeeping. NCERT Solution Class 9 Science of Chapter 15 includes all Intext exercises and end exercises for you. The end exercise includes solutions to all 9 questions given in your NCERT Textbook. These questions will test your understanding ability, analysis skills and memory skills. Read the text thoroughly and practice the questions by yourself to prepare for your exams. These chapters are high-scoring and can help you ace your examinations.