CBSE Class 9 Science Lesson Notes CBSE Class 9 Science Lesson Notes, Explanation and Question Answers from NCERT Science Textbook NCERT Science Textbook for Class 9 Lessons Chapter 1 - Matter in Our Surroundings Notes and Explanation MCQ Questions Chapter 2 - Is Matter around us Pure Notes and Explanation MCQ Questions Chapter 3 - Atoms and Molecules Notes and Explanation MCQ Questions Chapter 4 - Structure of the Atom Notes and Explanation MCQ Questions Chapter 5 - The Fundamental Unit of Life Notes and Explanation MCQ Questions Chapter 6 - Tissues Notes and Explanation MCQ Questions Chapter 7 - Motion Notes and Explanation MCQ Questions Chapter 8 - Force and Laws of Motion Notes and Explanation MCQ Questions Chapter 9 - Gravitation Notes and Explanation MCQ Questions Chapter 10 - Work and Energy Notes and Explanation MCQ Questions Chapter 11 - Sound Notes and Explanation MCQ Questions Chapter 12 - Improvement in Food Resources Notes and Explanation MCQ Questions