This book is a comprehensive learning companion for CBSE Class 9 Science, carefully aligned with the latest NCERT textbook and CBSE syllabus. It presents Physics, Chemistry and Biology through clear explanations, illustrative diagrams, mind maps and practical examples, supported by chapter-wise exercises, competency-based questions, NCERT Exemplar problems and sample papers. Designed to strengthen concepts, encourage scientific thinking and build exam confidence, it guides students from foundational understanding to advanced application.