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NCERT Books for Class 9 have been rationalised and reprinted for the current academic session 2022-2023. Check here the list of rationalised content (deleted chapters/topics) in Class 9 NCERT Books. Download new books in PDF.
List of Rationalised Content in NCERT Books for Class 9
List of Rationalised Content in NCERT Books for Class 9: The National Council of Educational Research and Training (NCERT) has reprinted and published the new editions of class 9 books after rationalising the content of the books. Contents of the textbooks have been rationalised in view of overlapping with similar content included in other subject areas in the same class and similar content included in the lower or higher class in the same subject. Another factor taken into consideration was to check the difficulty level of the content. Thus, some of the significant chapters or topics have been deleted from the Class 9 NCERT Books. We have provided here the list of the chapters and topics removed from the class 9 books along with their respective page numbers. We have also provided below the links to download the new editions of the NCERT Books for Class 9 which have been reprinted for the current academic session, 2022-2023.
Check below list of rationalised content in Class 9 Maths NCERT Book:
|
Chapter |
Page No. |
Dropped Topics/Chapter |
|
Chapter 1: Number Systems |
15–18 27 |
1.4 Representing real numbers on the number line |
|
Chapter 2: Polynomials |
35–40 50 |
2.4 Remainder theorem |
|
Chapter 3: Coordinate Geometry |
61–65 |
3.3 Plotting 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 lines parallel–x–axis and 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 transversal 6.7 Angle sum property of a triangle |
|
Chapter 7: Triangles |
129–134 |
7.6 Inequalities in triangles |
|
Chapter 8: Quadrilaterals |
135–138 |
8.1 Introduction 8.2 Angle sum property of a quadrilateral |
|
|
145–147 151 |
8.3 Types of quadrilaterals 8.5 Another condition for a Quadrilateral–be a parallelogram |
|
Chapter 9: Areas of Parallelogram and Triangles |
152–167 |
Full chapter |
|
Chapter 10: Circles |
168 |
10.1 Introduction |
|
|
169–171 |
10.2 Circles and its related terms: Review |
|
|
174–176 186–187 |
Circle through three points |
|
Chapter 11: Construction |
188–196 |
Full chapter |
|
Chapter 12: Heron’s Formula |
197–199 203–207 |
12.1 Introduction 12.3 Application of Heron’s formula in finding areas of quadrilaterals |
|
Chapter 13: Surface Area and Volume |
208–217 |
13.1 Introduction 13.2 Surface area of a cuboid and cube |
|
|
226–231 |
13.3 Surface area of right circular cylinder |
|
|
236–237 |
13.6 Volume of cuboid 13.7 Volume of cylinder |
|
Chapter 14: Statistics |
238–246 261–270 |
14.1 Introduction 14.2 Collection of data 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 |
Answers of Exercises |
Check below list of rationalised content in Class 9 Science NCERT Book:
|
Chapter |
Page No. |
Dropped Topics/Chapter |
|
Chapter 1: Matter in Our Surroundings |
10 |
Box item titled ‘Plasma and Bose–Einstein Condensate’ |
|
Chapter 2: Is Matter Around Us Pure? |
19–24 |
2.3 Separating the components of a mixture 2.3.1 How can we obtain coloured component (dye) from blue/ black ink? 2.3.2 How can we separate cream from milk? 2.3.3 How can we separate a mixture of two immiscible liquids? 2.3.4 How can we separate a mixture of salt and camphor? 2.3.5 Is the dye in black ink a single colour? 2.3.6 How can we separate a mixture of two miscible liquids? 2.3.7 How can we obtain different gases from air ? 2.3.8 How can we obtain pure copper sulphate from an impure sample? |
|
Chapter 3: Atoms and Molecules |
40–42 |
Mole concept |
|
Chapter 7: Diversity in 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 item ‘Conservation Laws’ |
|
Chapter 10: Gravitation |
133, 142 |
Following Box Items: 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 Commercial Unit of Energy |
|
Chapter 12: Sound |
161,162, 167, 171 and 172 |
Box item titled ‘Can sound make a light spot dance?’ Box item titled ‘Sonic Boom’ 12.2.1 Sound Needs a Medium– Travel 12.5.1 Sonar 12.6 Structure of Human Ear |
|
Chapter 13: Why Do We Fall Ill? |
176–188 |
Full chapter |
|
Chapter 14: Natural Resources |
189–202 |
Full chapter |
Check below list of rationalised content in Class 9 Social Science NCERT Book:
India and the Contemporary World-I
Contemporary India-I
|
Chapter |
Page No. |
Dropped Topics/Chapter |
|
Chapter 4: Climate |
28, 29, 30, 31, 36 |
Jet streams, western cyclonic disturbances, The Indian Monsoon, the onset of the monsoon and withdrawal and related Figs 4.1, 4.2, 4.3, 4.6 |
|
Chapter 5: Natural Vegetation and Wildlife |
42–44 |
Factors affecting the diversity of flora and fauna Fig 5.1 and Table 5.1 |
|
Chapter 6: Population |
53, 58, 59, 60, 61 |
Pointers regarding three major questions about population, age composition, sex ratio, literacy rates, occupational structure, health, NPP 2000 and adolescents |
Economics
Democratic Politics-I
Information and Communication Technology
We have provided below the link to access the new editions of the Class 9 NCERT Books that have been reprinted and published exclusively for the current academic session (2022-2023). Click on the link to get the latest books and prepare for your CBSE Class 9 Annual Exam 2022-23 in an effective manner.
रोमांचक गेम्स खेलें और जीतें एक लाख रुपए तक कैश
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