Class 9 Science Notes
Chapter 12 Sound
- Chapter 1 Matter In Our Surroundings
- Chapter 2 Is Matter Around Us Pure
- Chapter 3 Atoms And Molecules
- Chapter 4 Structure Of The Atom
- Chapter 5 The Fundamental Unit Of Life
- Chapter 6 Tissues
- Chapter 7 Diversity In Living Organisms
- Chapter 8 Motion
- Chapter 9 Force And Laws Of Motion
- Chapter 10 Gravitation
- Chapter 11 Work And Energy
- Chapter 12 Sound
- Chapter 13 Why Do We Fall Ill
- Chapter 14 Natural Resources
- Chapter 15 Improvement In Food Resources