December 23, 2023March 14, 2025 Class 8 Science Class 8 Physics Light Sound Force and Pressure Friction Some Natural Phenomena Stars and Solar System Chemistry Synthetic Fibres and Plastics Metals and Non Metals Chemical Effects of Electric Current Combustion and Fuel Coal and Petroleum Pollution of air and water Biology Crop Production and Management Reproduction in animals Cell Structure and Functions Reaching the age of Adolescence