Science Class 8 Question Answer Crop Production and Management Chapter 1 Science Class 8Microorganisms: Friend and Foe Chapter 2 Science Class 8Synthetic Fibres and Plastics Chapter 3 Science Class 8 Materials: Metals and Non-Metals Chapter 4 Science Class 8Coal and Petroleum Chapter 5 Science Class 8Combustion and Flame Chapter 6 Science Class 8Conservation of Plants and Animals Chapter 7 Science Class 8Cell Structure and Functions Chapter 8 Science Class 8Reproduction in Animals Chapter 9 Science Class 8Reaching the Age of Adolescence Chapter 10 Science Class 8Force and Pressure Chapter 11 Science Class 8Friction Chapter 12 Science Class 8Sound Chapter 13 Science Class 8Chemical Effects of Electric Current Chapter 14 Science Class 8Some Natural Phenomena Chapter 15 Science Class 8Light Chapter 16 Science Class 8Stars and the Solar System Chapter 17 Science Class 8Pollution of Air and Water Chapter 18 Science Class 8