NBSE Class 10 Syllabus 2023

SOCIAL SCIENCES
CLASS – X

Part ‘A’ External Time : 3 hours Marks : 80
Unit Marks
1 Unit - I India and the Contemporary 18
World
2 Unit - II Resources (India) 18
3 Unit - III Democratic Politics 16
4 Unit - IV Understanding an Economy 18
5 Nagaland (Geography & G.K) 10

Chapter Page No. Dropped Topics/Chapter
1 Chapter - 5 (Resources) 57 Types of Resources
2 Chapter - 7 (Agriculture) 100 Contribution of Agriculture Towards
National Economy
3 Chapter - 8 (Manufacturing 105 National Economy and Industries
Industries)
4 Chapter - 14 (Outcomes of 179, 180 Accommodation of Social Diversity
Democracy)
5 Chapter - 15 (Challenges to 184-190 Whole chapter dropped
Democracy)

MATHEMATICS
CLASS-X

Part ‘A’ External Time : 3 hours Marks : 80
Unit Marks
I. Number System 2
II. Algebra 20
III. Trigonometry 12
IV. Coordinate Geometry 6
V. Geometry 16
VI. Mensuration 12
VII. Statistics & Probability 12

Chapter Page No. Dropped Topics/Chapters
Chapter 1: 2-7 1.2 Euclid’s division lemma - Exercise 1.1
Real Number 15-19 1.5 Revisiting rational numbers and their decimal
expansions
Exercise 1.4
Chapter 2:
35-39 2.4 Division algorithm for polynomials - Ex 2.3
Polynomials
Chapter 3: 41-46 3.2Pair of linear equations in two variables. - Exercise 3.1
Pair of Linear 46-52 3.3 Graphical method of solution of a pair of linear
Equations in Two equations
Variables Exercise 3.2, questions B.1, 4 & 7
59-66 3.4.3 Cross-multiplication method
Exercise 3.5
66-71 3.5 Equation reducible to a pair of linear equations in two
variables - Exercise 3.6
Chapter 4: Quadratic 80-92 4.4 Solution of a quadratic equation by completing the
Equations squares
Exercise 4.3, question B.1
Chapter 6: 150-151 Exercise 6.4
Triangles 157-158 Exercise 6.5
Chapter 7: 175-178 7.4Area of a triangle
Coordinate Geometry Exercise 7.3
Chapter 8: 196-198 8.4 Trigonometric ratios of complementary angles
Introduction to Exercise 8.3
Trigonometry
Chapter 9: 204-205 9.1 Introduction
Some Applications of
Trigonometry

Chapter 11: 226-229 11.1 Introduction
Construction 11.2 Division of a line segment
Exercise 11.1, question 1
230-232 11.3 Construction of tangents to a circle
Exercise 11.2
11.4 Summary
Chapter 12: 12.1 Introduction
Areas Related to 233-236 12.2 Perimeter and area of a circle – A review
Circles Exercise 12.1
242-249 12.4 Areas of combinations of plane figures
Exercise 12.3

Chapter 13: 260-264 13.4 Conversion of solid from one shape to another
Surface Areas and Exercise 13.3
Volumes 264-271 13.5 Frustum of a cone
Exercise 13.4
Chapter 14: 303-307 14.5Graphical representation of cumulative frequency
Statistics distribution - Exercise 14.4
Chapter 15: 309 15.1 Introduction
Probability 325-326 Exercise 15.2

SCIENCE
CLASS IX

PHASE I 40 marks
Unit I: 1. Matter in Our Surroundings 4 marks
3. Atoms and Molecules 7 marks
Unit II: 5. The Fundamental Unit of life 7marks
7. Diversity in Living Organisms 6 marks
Unit III: 8. Motion 5 marks
11. Work and Energy 5 marks
Unit IV: 13. Why do we Fall ill 6 marks

PHASE II 40 marks
Unit I: 2. Is Matter Around Us Pure? 5 marks
4. Structure of the Atom 7 marks
Unit II: 6. Tissues 7 marks
Unit III: 9. Force and Laws of Motion 6 marks
10. Gravitation 4 marks
12. Sound 5 marks
Unit V: 15. Improvement in Food Resources 6 marks

SCIENCE
CLASS X
Part ‘A’ External Time : 3 hours Marks : 80
Unit I Chemical substances
1. Chemical Reaction and Equations 9 marks
2. Acids, Bases and Salts
3. Metals and Non-metals 7 marks
4. Carbon and its compounds 7 marks
Unit II Living World
6. Life Processes 12 marks
7. Control and Coordination
8. How do Organisms Reproduce? 11 marks
9. Heredity and Evolution
Unit III Natural Phenomena
10. Light- Reflection and Refraction 13 marks
11. Human Eye and Colourful World
Unit IV Electric Current and its Effects
12. Electricity 13marks
13. Magnetic Effects of Electric Current
Unit V Natural Resources
14. Sources of Energy 8 marks
15. Our Environment

Chapter Dropped topics/Chapters
Chapter 1: Chemical Reaction and 1.3.1 Corrosion
Equations 1.3.2 Rancidity
Chapter 5: Periodic Classification of Full chapter will not assessed
Elements
Chapter 7: Control and Coordination 7.1.3 How are tissues protected?
7.1.4 How does the nervous tissue cause action?
Chapter 8: How do Organisms 8.1 Do Organisms create exact copies of themselves?
Reproduce? 8.1.1 The importance of Variation
8.3.1 Why the sexual mode of reproduction?

Chapter 9: Heredity and Evolution 9.1 Accumulation of variation during reproduction
9.3 Evolution
9.3.1 An illustration
9.3.2 Acquired and Inherited Traits
9.4 Speciation
9.5 Evolution and classification
9.5.1 Tracing evolutionary relationships
9.5.2 Fossils
9.5.3 Evolution by stages
Chapter 14: Sources of Energy 14.3.2 Energy from the sea
14.3.3 Geothermal energy
Chapter 16: Management of Natural Full chapter will not be assessed in the final examination.
Resources Teachers to assign students to read this chapter and
assess through activities/assignments/write-ups/projects,
etc and give marks for Internal Assessment
Note: Information in boxes in all the chapters will not be assessed in the final examination.