The UPSC Civil Services, State PCS, and other similar competitive examinations demand a comprehensive understanding of a wide range of subjects, and General Science forms an integral part of this demanding endeavour. This book is meticulously curated to excel in this crucial area by equipping aspirants with the necessary knowledge and analytical skills. The challenges of preparing for competitive exams are understandable. Time is of the essence, and information overload can be overwhelming. Therefore, this book takes a learner-centric approach, covering all important concepts and topics in a holistic, simplified, clear, and concise manner. The book also takes an exam-centric approach, ensuring that only relevant information is presented to the readers.