Science & Technology is a thoroughly designed and updated resource covering essential scientific concepts and recent technological developments relevant to competitive examinations. The book explains topics in a simple, clear, and application-based manner, helping aspirants understand both fundamentals and current advancements. It covers Physics, Chemistry, Biology (basic concepts) along with emerging areas such as Space Technology, Biotechnology, Nanotechnology, Artificial Intelligence, Robotics, Information Technology, Defence Technology, Energy & Environment, and Health & Medical Science. Special emphasis is given to current developments and their real-world applications, making it highly relevant for exams. The content is aligned with the latest syllabus and trends of UPSC Civil Services Examination, State Public Service Commissions, and other competitive exams. Structured explanations, examples, and exam-focused presentation make this book ideal for Prelims preparation, conceptual clarity, and quick revision.