Class 9th Science NCERT Book in english. Chapters in App 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: Motion Chapter 8: Force and Laws of Motion Chapter 9: Gravitation Chapter 10: Work and Energy Chapter 11: Sound Chapter 12: Improvement in Food Resources This 9th class book is very helpful, all chapters are absolutely clear, this book is for your exam, it will help you in getting your outstanding, this app is free, or along with previous year paper, it will help you in completing your exam. If your IQ level increases then you will not hesitate in the exam.