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BYJU’S brings you NCERT solutions for class 9 for all the subjects including Class 9 English, Science, and Maths chapter wise for all the questions of exercise in NCERT textbook for class 9. All the solutions are provided by highly qualified teachers and experts and can prove to be helpful in solving complex questions.

Also, the question papers set for CBSE Class 9 exams are mainly based on exercise questions published in NCERT books. Byju’s has compiled NCERT solutions for class 9 English, NCERT solutions for class 9 Science and NCERT solutions for Class 9 Maths, along with clear and detailed explanations for every question.

Our objective is to support every student to compare their answers and math solutions with solved examples for CBSE class 9 syllabus and other subjects and perform well in CBSE Class 9 examination.

##### NCERT Solutions for Class 9
NCERT Solutions for Class 9 Maths
NCERT Solutions for Class 9 Science

## Triangles

Chapter – 7 : Triangles   Exercise 1 Question 1: In quadrilateral PQRS, PR = PQ and PQ bisects (look at the fig.). Show that the . What can you say about QR and QS? Solution: In and , we have PR = PS (PQ bisects ) PQ = PQ (common) (By SAS congruence) Hence […]

## Force and Laws of Motion

Chapter –  9 : Force and Laws of Motion   1. Choose the one which has more inertia.      i-A Toy thrown up by a boy (or) A coin thrown up by a boy     ii-An apple falling from a tree (or) A rose falling from a plant     iii-A motorcycle (or) A bus Answer […]

## Statistics

Chapter-14: Statistics    Exercise 1 Q1) Give 5 scenarios of day to day life from which any type of data can be collected. Solution: Daily life activities from where data can be collected are as follows: (i) Daily household expenditure (ii) Rainfall happening in your area (iii) Electricity bill of monthly (iv) Voting results or […]

## Number Systems

Chapter-1: Number systems   1) Prove that zero as a rational number. Write zero in p/q, where p and q are integers and q ≠ 0? Answer: Yes. Zero is a rational number and it can be represented as . 2) In between 3 and 4, find six rational numbers. Answer: There are an infinite number of rational numbers between the numbers […]

## Motion

Chapter-8: Motion   Questions: 1) A man walks around a square street of side 10 m in 40 sec. Calculate the displacement of the man at the end of 2 minutes 20 seconds. Soln: The man takes 40 sec to cover ( 4 * 10 ) 40 metres. This shows he covers one metre in […]

## Quadrilaterals

Chapter – 8 : Quadrilaterals   Q1. The angles of quadrilateral are in the ratio . Find the angles of the quadrilateral. Solution: Let the common ratio between the angles be x. We know that the ‘Sum of the interior angles of the quadrilateral’ = Now, Therefore the Angles of the quadrilateral are:   Q2. […]

## Coordinate Geometry

Chapter- 3: Coordinate Geometry   Exercise 1 Q1. How will you describe the position of a mobile phone kept on the study table to another person? Solution: For describing the position of a mobile phone kept on the study table, we take two lines, a perpendicular and a horizontal line. Considering the table as a […]

## Polynomials

Chapter-2 : Polynomials   Exercise – 1 Q.1.Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer: (i) Answer: It is a polynomial in one variable.   (ii) Answer: It is a polynomial in one variable.   (iii) Answer: It is not a polynomial since the […]

## Sound

Chapter-12: Sound   Que.1. When an object vibrates in a medium, it produces sound which reaches our ear. Explain how it is done. Ans. Sound propagates through air which is a medium. When the prongs of a tuning fork vibrate, they disturb the air molecules in the surrounding. When it moves forward, the molecules in […]

## Introduction to Euclid’s Geomet...

Chapter-5: Introduction to Euclid’s Geometry    Exercise 5:1 Question 1 : State true or false for the following statements mentioned below with the reason: a: Through a single point only one line can be passed. b: Through two distinct lines there are infinite number of lines that can be passed. c: A line that is […]