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:
|
Chapter |
Page number |
Dropped Topics/Chapter |
|
Chapter 1: Number Systems |
15–18 27 |
1.4 Representation of real numbers on the number line |
|
Chapter 2: Polynomials |
35–40 50 |
2.4 Remainder theorem |
|
Chapter 3: Coordinate Geometry |
61–65 |
3.3 Plot a point in the plane if its coordinates are given |
|
Chapter 4: Linear equations in two variables |
70–75 |
4.4 Graph of linear equations in two variables |
|
75–77 |
4.5 Equations of straight lines parallel to the x-axis and the y-axis |
|
|
Chapter 5: Introduction – Euclidean Geometry |
86–88 |
5.3 Equivalent versions of Euclid’s fifth postulate |
|
Chapter 6: Lines and Angles |
98–100 103 105–108 |
6.5 Parallel lines and a secant 6.7 Property of the sum of the angles of a triangle |
|
Chapter 7: Triangles |
129–134 |
7.6 Inequalities in triangles |
|
Chapter 8: Quadrilaterals |
135–138 |
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 |
152–167 |
Full chapter |
|
Chapter 10: Circles |
168 |
10.1 Presentation |
|
169–171 |
10.2 Circles and its associated terms: review |
|
|
174–176 186–187 |
Circle passing through three points |
|
|
Chapter 11: Building |
188–196 |
Full chapter |
|
Chapter 12: The Heron Formula |
197–199 203–207 |
12.1 Presentation 12.3 Application of Heron’s formula to find areas of quadrilaterals |
|
Chapter 13: Area and volume |
208-217 |
13.1 Presentation 13.2 Area of a cuboid and a cube |
|
226–231 |
13.3 Area of right circular cylinder |
|
|
236–237 |
13.6 Volume of the cuboid 13.7 Cylinder volume |
|
|
Chapter 14: Statistics |
238–246 261–270 |
14.1 Presentation 14.2 Data collection 14.3 Presentation of data 14.5 Measure of central tendency 14.6 Summary |
|
Chapter 15: Probability |
271–285 |
Full chapter |
|
Answers |
326 328 330–345 347 |
Exercise answers |
Check below the list of streamlined content in the NCERT Class 9 Science book:
|
Chapter |
Page number |
Dropped Topics/Chapter |
|
Chapter 1: Matter in our environment |
ten |
Box item titled ‘Plasma and Bose – Einstein Condensate’ |
|
Chapter 2: Is the matter around us pure? |
19–24 |
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 |
40–42 |
mole concept |
|
Chapter 7: Diversity of living organisms |
80–97 |
Full chapter |
|
Chapter 9: Force and Laws of Motion |
123–127 |
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 |
156 |
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? |
176–188 |
Full chapter |
|
Chapter 14: Natural Resources |
189–202 |
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
|
Chapter |
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 |
42–44 |
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 |
Economy
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.
