The book is divided into 11 chapters which covers all topics of SGBAU Amravati NEP 2020 based curriculum. Topics include Water technology, Nanotechnology, Lubricants, Energy sciences, Energy storage system, E-Waste, Recycling and Green Computing, Corrosion, corrosion controls, Bio informatics, Environmental Challenges, Biochemical technology and Bioinformatics, Cement, Phase rule etc.. Each chapter begins with clear learning objectives and includes numerous examples, illustrations, and practice problems to reinforce the material. This book will serve as a valuable resource for first-year engineering students at SGBAU, helping them build a solid foundation in chemistry that will support their academic and professional growth. By aligning with the NEP 2020 guidelines, we aim to provide a holistic education that integrates scientific knowledge with practical skills, preparing students for the challenges and opportunities of the engineering profession.