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chapter 12 sound ncert

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


01.01.1970
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