Objective Soil Science is a comprehensive and exam-oriented resource designed to provide a clear and concise understanding of the fundamental and applied aspects of soil science. The book systematically covers all major domains, including soil physics, chemistry, mineralogy, fertility, plant nutrition, soil biology, and environmental soil science. Each chapter is structured to present key concepts, definitions, and objective-type content in an easy-to-understand format, enabling readers to grasp essential topics quickly and effectively. Special emphasis has been given to problem soils, soil conservation, irrigation, drainage, and modern tools such as remote sensing and GIS, making the book both conceptually strong and practically relevant. The inclusion of recent advances ensures that readers stay updated with current developments in the field. This book is primarily intended for undergraduate and postgraduate students of agriculture and allied sciences, as well as aspirants preparing for competitive examinations such as ICAR-JRF, SRF, ARS, ICAR-NET, UPSC, and other state and national-level tests. It will serve as a valuable reference for teachers, academicians, extension workers, and professionals seeking a quick revision guide and a solid conceptual foundation in soil science