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The NCERT books for Class 9 have been streamlined and reprinted for the current academic session 2022-2023. View the list of streamlined content (removed chapters/topics) in NCERT Class 9 books here. Download new books in PDF.

List of Streamlined Content in NCERT Books for Class 9

List of Streamlined Content in NCERT Books for Class 9

List of Streamlined Content in NCERT Books for Class 9: The National Council for Educational Research and Training (NCERT) has reprinted and published the new editions of the Class 9 books after streamlining the content of the books. Textbook content has been streamlined due to overlap with similar content included in other subjects of the same class and similar content included in the lower or higher class of the same subject. Another factor taken into consideration was to check the difficulty level of the content. So, some of the important chapters or topics have been removed from NCERT Class 9 books. Here we have provided the list of chapters and topics removed from Class 9 books along with their respective page numbers. We have also provided below the links to download the new editions of NCERT books for Class 9 that have been reprinted for the current academic session, 2022-2023.

See the list of streamlined content in the NCERT Maths Class 9 book below:


Page number

Dropped Topics/Chapter

Chapter 1: Number Systems



1.4 Representation of real numbers on the number line

Chapter 2: Polynomials



2.4 Remainder theorem

Chapter 3: Coordinate Geometry


3.3 Plot a point in the plane if its coordinates are given

Chapter 4: Linear equations in two variables


4.4 Graph of linear equations in two variables


4.5 Equations of straight lines parallel to the x-axis and the y-axis

Chapter 5: Introduction – Euclidean Geometry


5.3 Equivalent versions of Euclid’s fifth postulate

Chapter 6: Lines and Angles




6.5 Parallel lines and a secant

6.7 Property of the sum of the angles of a triangle

Chapter 7: Triangles


7.6 Inequalities in triangles

Chapter 8: Quadrilaterals


8.1 Presentation

8.2 Angle sum property of a quadrilateral

145–147 151

8.3 Types of quadrilaterals

8.5 Another condition for a quadrilateral – to be a parallelogram

Chapter 9: Areas of Parallelograms and Triangles


Full chapter

Chapter 10: Circles


10.1 Presentation


10.2 Circles and its associated terms: review



Circle passing through three points

Chapter 11: Building


Full chapter

Chapter 12: The Heron Formula



12.1 Presentation

12.3 Application of Heron’s formula to find areas of quadrilaterals

Chapter 13: Area and volume


13.1 Presentation

13.2 Area of ​​a cuboid and a cube


13.3 Area of ​​right circular cylinder


13.6 Volume of the cuboid

13.7 Cylinder volume

Chapter 14: Statistics



14.1 Presentation

14.2 Data collection

14.3 Presentation of data

14.5 Measure of central tendency

14.6 Summary

Chapter 15: Probability


Full chapter






Exercise answers

Check below the list of streamlined content in the NCERT Class 9 Science book:


Page number

Dropped Topics/Chapter

Chapter 1: Matter in our environment


Box item titled ‘Plasma and Bose – Einstein Condensate’

Chapter 2: Is the matter around us pure?


2.3 Separation of components of a mixture

2.3.1 How can we get a colored component (dye) from blue/black ink?

2.3.2 How can cream be separated from milk?

2.3.3 How can a mixture of two immiscible liquids be separated?

2.3.4 How can a mixture of salt and camphor be separated?

2.3.5 Is the black ink colorant one color?

2.3.6 How can a mixture of two miscible liquids be separated?

2.3.7 How can different gases be obtained from air?

2.3.8 How can pure copper sulphate be obtained from an impure sample?

Chapter 3: Atoms and Molecules


mole concept

Chapter 7: Diversity of living organisms


Full chapter

Chapter 9: Force and Laws of Motion


9.6 Conservation of momentum

Activity 9.5, 9.6

Example 9.6, 9.7, 9.8

Box ‘Conservation laws’

Chapter 10: Gravity

133, 142

The following box elements: a. Brief description of Isaac Newton

b. How did Newton guess the inverse square rule?

10.7 Relative density

Example 10.7

Chapter 11: Work and Energy


11.3.1 Energy business unit

Chapter 12: Sound

161 162,

167, 171

and 172

Box article titled “Can sound make a point of light dance?” Box item titled “Sonic Boom” 12.2.1 Sound Needs Support – Travel 12.5.1 Sonar 12.6 Structure of the Human Ear

Chapter 13: Why do we get sick?


Full chapter

Chapter 14: Natural Resources


Full chapter

Check out the list of streamlined content in the NCERT Social Science Class 9 Book below:

India and the contemporary world-I

Contemporary India-I


Page number

Dropped Topics/Chapter

Chapter 4: Climate

28, 29, 30, 31, 36

Jet streams, western cyclonic disturbances, Indian monsoon, onset of monsoon and retreat and Figs 4.1, 4.2, 4.3, 4.6

Chapter 5: Natural Vegetation and Fauna


Factors affecting the diversity of flora and fauna Fig 5.1 and Table 5.1

Chapter 6: People

53, 58, 59, 60, 61

Pointers to three major questions on population, age composition, sex ratio, literacy rates, occupational structure, health, NPP 2000 and adolescents


Democratic Politics-I

Information and communication technologies

We have provided below the link to access new editions of NCERT Class 9 books that have been reprinted and released exclusively for the current academic session (2022-2023). Click on the link to get the latest books and prepare effectively for your CBSE Class 9 2022-23 Annual Exam.

Jagran Game

More information

Colin L. Johnson