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CBSE Class 9 Chapter-wise NCERT Solutions for Science and Mathematics along with Important Notes are provided in the article below. Class 9 Notes have been created based on the recently updated CBSE Class 9 Syllabus for AY 2022-23.
The article covers important topics from each chapter of Science and Mathematics. NCERT Solutions and additional reference sources have also been provided for students’ reference.
NCERT Solutions
- NCERT Solutions for Class 9 Science
- NCERT Solutions for Class 9 Mathematics
- NCERT Solutions for Class 6 to 12
CBSE Class 9 Science NCERT Solutions and Important Topics
NCERT Solutions Class 9 Science covers important topics including Matter, Fundamental Unit of Life, Atoms & Molecules, Tissues, Motion, Laws of Motion, Gravitation, and Natural Resources among others. CBSE Class 9 Science syllabus is distributed across three branches: Physics, Chemistry, and Biology.
CBSE Class 9 Science NCERT Solutions and Important Topics are given in the following sections:
CBSE Class 9 Science Detailed Syllabus
CBSE Class 9 Science Detailed Syllabus is provided below:
Chapter 1 Matter in Our Surroundings
Important topics covered in the chapter are:
- Properties Of Matter
- Difference Between Vaporization and Evaporation
- LPG Composition
- Difference Between Evaporation and Condensation
- Physical Nature of Matter
- Definition of Matter
- Characteristics of Particles of Matter
- Evaporation
- Factors affecting Evaporation
- Condensation
- Factor Affecting Evaporation
- Electronic Bulb
Chapter 2 Is Matter Around Us Pure
Important topics covered in the chapter are:
- Difference Between Pure Substance and Mixture
- Types of Mixtures
- What is a Solution?
- Concentration of a Solution
- What is a Suspension?
- Difference Between Element and Compound
- Solute
- Applications of centrifugation
- Centrifugation
Chapter 3 Atoms and Molecules
Important topics covered in the chapter are:
- How to Find Atomic Mass
- Isotopes and Isobars
- Difference Between Elements and Atoms
- Laws of Chemical Combination
- What is an Atom? And How Do Atoms Exist?
- What is a Molecule? And Molecules of Elements
- Writing Chemical Formulae
- Mole Concept
- Difference Between Atom and Molecule
- Continuity Equation
- Difference Between Molar mass and Molecular mass
- Atomic And Molecular Masses
- Difference Between An Atom And A Molecule
- Gram formula mass
- Sodium nitrate formula
- Aluminum chloride formula
- Protons
Chapter 4 Structure of the Atom
Important topics covered in the chapter are:
- Neutrons
- Atomic Number
- Mass Number
- Valency
- Nucleus of an Atom and Atomic Mass
- Franck Hertz Experiment
- Proton Mass
- Shell Model
- Deuterium
- Visible Light
- Spectroscopy
- Hunds Rule
- Principle of UV Visible Spectroscopy
Chapter 5 The Fundamental Unit of Life
Important topics covered in the chapter are:
- Plant Cell
- Animal Cell
- Difference between plant cells and animal cell
- Endoplasmic Reticulum
- Protoplasm
- Unicellular Organisms
- Cyclic And Non Cyclic Photophosphorylation
- Difference Between Mitochondria and Plastids
- Difference Between Karyokinesis And Cytokinesis
- Diagram of Animal Cell
Chapter 6 Tissues
Important topics covered in the chapter are:
- Plant Tissues
- Muscular Tissue
- Difference Between Simple And Complex Tissue
- Permanent tissue
- Difference Between Xylem And Phloem
- Squamous
- Connective tissues
- Neurotransmitter
- Plant tissue vs animal tissue
- Class 9 chapter 6 tissues MCQ
- Tendon
- Meristematic Tissue
- Difference Between Neurons And Neuroglia
Chapter 7 Diversity in Living Organisms
Important topics covered in the chapter are:
- Fungi
- Bacteria
- Bryophyta
- Pteridophyta
- Coelenterata (Cnidaria)
- Platyhelminthes
- Nematoda
- Annelida
- Arthropoda
- Mollusca
- Echinodermata
- Protochordata
- Cyclostomata
- Pisces
- Amphibia
- Reptilia
- Aves
- Mammalia
- Living Things
- Biodiversity In Plants And Animals
- Class 9 Chapter 7 Diversity In Living Organisms MCQ
Chapter 8 Motion
Important topics covered in the chapter are:
- Graphical Representation of Motion
- Equations of Motion by Graphical Method
- Difference Between Distance and Displacement
- Equations of Motion
- Distance Time Graph
- Unit of Displacement
- Unit of Distance
- Velocity Formula
- Measuring rate of change in motion
- Distance traveled formula
- Linear speed formula
Chapter 9 Force and Laws of Motion
Important topics covered in the chapter are:
- Balanced and Unbalanced Forces
- First Law of Motion
- Inertia and Mass
- Mathematical Formulation of Second Law of Motion
- Effects of Forces
- Non-Contact Force
- Balanced Force
- Relation between Newton and Dyne
- Force and Motion
- Force of Friction
- Relation Between Kinetic Energy and Momentum
Chapter 10 Gravitation
Important topics covered in the chapter are:
- Mass and Weight
- Thrust and Pressure
- Density of Water
- Difference between gravitation and gravity
- Difference between mass and volume
- Elementary Idea Of Relative Density
- Difference between density and specific gravity
- Why doesn't the moon fall into the earth
- Archimedes Principle
- Central Force
- Global Positioning System
Chapter 11 Work, Power, and Energy
Important topics covered in the chapter are:
- Work
- Work Done By A Constant Force
- Law of Conservation of Energy
- Unit of Energy
- Difference between Force and Pressure
- Difference between Work and Energy
- Simple Machines
Chapter 12 Sound
Important topics covered in the chapter are:
- Production and Propagation of Sound
- Reflection of Sound
- Reverberation
- Ultrasound
- Sonar
- Structure of Human Ear
- Difference Between Echo and Reverberation
- Timbre
- Signal to noise ratio formula
- Acoustics
Chapter 13 Why Do We Fall Ill
Important topics covered in the chapter are:
- Jaundice symptoms
- Rickets
- Smallpox
- Polio
- Kala azar
- Difference between epidemic and pandemic
- Modes of Transmission of Diseases
- Principles of Treatment
- Chronic disease and poor health
- Health and its failure
- Organ specific and tissue specific manifestations
- Principle of treatment
- Acute and chronic diseases
- Inflammation
- TB (Tuberculosis)
- Measles
- Rabies
Chapter 14 Natural Resources
Important topics covered in the chapter are:
- Rain
- Oxygen Cycle
- Types of wind
- Difference between land breeze and sea breeze
- Causes of air pollution
- Effects of air pollution
- How are clouds formed?
- The role of atmosphere in climate control
- Hydrosphere
- Mineral riches in the soil
- Water Cycle
- Potable Water
- Properties of Soil
Chapter 15 Improvement in Food Resources
Important topics covered in the chapter are:
- Nutrient Management
- Organic Farming
- Cattle Farming
- Poultry Farming
- Fish Production
- Bee-Keeping
- Crop Production
- Manures And Fertilizers
- Storage Of Grains
- Difference Between Compost And Vermicompost
- Difference Between Micronutrients And Macronutrients
- Agriculture Fertilizers
- Improvement In Crop Yields
- Difference Between Cereals And Pulses
- Animal Husbandry Poultry
CBSE Class 9 Math NCERT Solutions and Chapter-wise Exercises
CBSE Class 9 Maths NCERT Solutions with Chapter-wise Exercises are provided in the further sections of the article.
CBSE Class 9 Math Detailed Syllabus
CBSE Class 9 Math Detailed Syllabus is provided below:
Class 9 Maths Chapter 1 Number Systems
Important topics covered in this chapter are:
- Irrational Numbers
- Operations on Rational Numbers
- Addition And Subtraction Of Integers
- Multiplication And Division Of Integers
- Integers As Exponents
- Rationalize the Denominator
- Class 9 Maths Chapter 1 Number System MCQs
- Number Line
Class 9 Maths Chapter 2 Polynomials
Important topics covered in this chapter are:
- Polynomials in One Variable
- Algebraic Identities
- Remainder Theorem
- Class 9 Maths Chapter 2 Polynomials MCQs
- Synthetic Division
- Remainder
Chapter 4 Coordinate Geometry
Important topics covered in this chapter are:
| NCERT Solutions for Coordinate Geometry – Chapter Exercises |
|---|
| NCERT Solutions Coordinate Geometry Class 9 Exercise 3.1 |
| NCERT Solutions Coordinate Geometry Class 9 Exercise 3.2 |
| NCERT Solutions Coordinate Geometry Class 9 Exercise 3.3 |
Chapter 4 Linear Equations in Two Variables
Important topics covered in this chapter are:
- Graph of a Linear Equation in Two Variables
- Class 9 Maths Chapter 3 Linear Equations in Two Variables MCQs
- Difference Between Linear and Nonlinear Equations
| NCERT Solutions for Linear Equations in Two Variables – Chapter Exercises |
|---|
| NCERT Solutions Linear Equations in Two Variables Class 9 Exercise 4.1 |
| NCERT Solutions Linear Equations in Two Variables Class 9 Exercise 4.2 |
| NCERT Solutions Linear Equations in Two Variables Class 9 Exercise 4.3 |
| NCERT Solutions Linear Equations in Two Variables Class 9 Exercise 4.4 |
Chapter 5 Introduction to Euclid’s Geometry
Check out: Introduction to Euclid’s Geometry MCQs
| NCERT Solutions for Introduction to Euclid’s Geometry – Chapter Exercises |
|---|
| NCERT Solutions Introduction to Euclid’s Geometry Class 9 Exercise 5.1 |
| NCERT Solutions Introduction to Euclid’s Geometry Class 9 Exercise 5.2 |
Chapter 6 Lines and Angles
Important topics covered in this chapter are:
- Pairs of Angles
- Parallel Lines and a Transversal
- Collinear Points
- Vertex
- Linear Pair Axiom
- Transversal
- Corresponding Angles Axiom
- Alternate Angles
- Properties of Parallel Lines
- Angle Formula
- Obtuse Angle
- Class 9 Maths Chapter 6 Lines and Angles MCQs
- Adjacent Angles Vertical
- Linear Pair of Angles
- Intersecting Lines and Non Intersecting Lines
| NCERT Solutions for Lines and Angles – Chapter Exercises |
|---|
| NCERT Solutions Lines and Angles Class 9 Exercise 6.1 |
| NCERT Solutions Lines and Angles Class 9 Exercise 6.2 |
| NCERT Solutions Lines and Angles Class 9 Exercise 6.3 |
Chapter 7 Triangles
Important topics covered in this chapter are:
- Mid Point Theorem
- Isosceles Triangle
- Class 9 Maths Chapter 7 Triangles MCQs
- Sides of a Triangle
- Similar Figures
Chapter 8 Quadrilaterals
Important topics covered in this chapter are:
- Types of Quadrilaterals
- Properties of a Parallelogram
- Quadrilateral Angle Sum Property
- Difference between Rhombus and Parallelogram
- Quadrilateral Formula
- Area of a Trapezoid Formula
- Tangential Quadrilateral Formula
- Class 9 Maths Chapter 8 Quadrilaterals MCQs
- Angles of a Parallelogram
| NCERT Solutions for Quadrilaterals – Chapter Exercises |
|---|
| NCERT Solutions Quadrilaterals Class 9 Exercise 8.1 |
| NCERT Solutions Quadrilaterals Class 9 Exercise 8.2 |
Chapter 9 Areas of Triangles and Parallelogram
Important topics covered in this chapter are:
| NCERT Solutions for Areas of Triangles and Parallelogram – Chapter Exercises |
|---|
| NCERT Solutions Areas of Triangles and Parallelogram Class 9 Exercise 9.1 |
| NCERT Solutions Areas of Triangles and Parallelogram Class 9 Exercise 9.2 |
| NCERT Solutions Areas of Triangles and Parallelogram Class 9 Exercise 9.3 |
| NCERT Solutions Areas of Triangles and Parallelogram Class 9 Exercise 9.4 |
Chapter 10 Circles
Check out: Class 9 Maths Chapter 10 Circles MCQs
Chapter 11 Constructions
Important topics covered in this chapter are:
- Surface Area of a Right Circular Cylinder
- Surface Area of a Right Circular Cone
- Surface Area of a Sphere
- Volume of a Cuboid
- Volume of a Right Circular Cone
- Volume of a Sphere
- Line Segment
- Line Segment And Ray
- Equilateral Triangle
- Scalene Triangle
- Types Of Triangles
- Properties of Triangle
- Difference between Area and Volume
- Formula Of Perimeter Shapes
- Class 9 Maths Chapter 11 Constructions MCQs
| NCERT Solutions for Constructions – Chapter Exercises |
|---|
| NCERT Solutions Constructions Class 9 Exercise 11.1 |
| NCERT Solutions Constructions Class 9 Exercise 11.2 |
Chapter 12 Heron’s Formula
Important topics covered in this chapter are:
| NCERT Solutions for Heron’s Formula – Chapter Exercises |
|---|
| NCERT Solutions Heron’s Formula Class 9 Exercise 12.1 |
| NCERT Solutions Heron’s Formula Class 9 Exercise 12.2 |
Chapter 13 Surface Areas and Volume
Important topics covered in this chapter are:
- Surface Area of Cuboid
- Surface Area of a Cone Formula
- Sphere Formula
- Volume of a Pyramid Formula
- Cuboid
- Surface Areas and Volume MCQs
Chapter 14 Statistics
Important topics covered in this chapter are:
- Graphical Representation of Data
- Bar Graphs
- Histogram
- Measures of Central Tendency
- Frequency Polygons
- Central Tendency
- Frequency Distribution Table Statistics
- Class 9 Maths Chapter 14 Statistics MCQs
| NCERT Solutions for Statistics – Chapter Exercises |
|---|
| NCERT Solutions Statistics Class 9 Exercise 14.1 |
| NCERT Solutions Statistics Class 9 Exercise 14.2 |
| NCERT Solutions Statistics Class 9 Exercise 14.3 |
| NCERT Solutions Statistics Class 9 Exercise 14.4 |
Chapter 15 Probability
Important topics covered in this chapter are:
- Conditional Probability
- Multiplication Theorem on Probability
- Independent Events
- Bayes’ Theorem
- Bias
- Bayes Theorem Formula
- Conditional Probability Formula
- Mean and Variance of Random Variable
- Difference Between Mutually Exclusive and Independent Events
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