After the rationalization of the NCERT syllabus in competitive exams like NEET, and JEE and their sync with different state boards, the need of dual synchronous preparation is increasing day by day. To cater to this need, Arihant's MASTER THE NCERT series is framed, developed, and now revised to serve as a complete resource for gripping NCERT with learning, practice and assessment tools. The present book of Chemistry volume I for NEET/ JEE is a revised and amplified edition, presenting the entire syllabus of class XI systematically. With line-by-line NCERT coverage, each chapter begins with a meticulous 3 Level Chapter Analysis, followed by NEET Key Notes, offering exclusive features such as NEET PYQ markings, Marks Maximizer, Mnemonics, Caution Points, and PYQ notes. Along with that, mastery is achieved through step-by-step guidance with more than 1750 multitudinal MCQs covering Concept Builders, Topical, Assertion-Reason, Statement Based, Matching, NCERT Exemplar's, Past Exams', and Skill Boosters sections. To facilitate effective revision "Chapter at a Glance" provides colorful concept maps, whereas figure explanatory videos are presented in the "Chemistry through Concept Master" section. Not only this, questions across exercises are conveniently tagged with NCERT page numbers and well-explained answers under the "Decoding The Questions" section. Additionally, students can gauge their progress with MCQs-based online chapter tests and 3 online Mock Tests for self-assessment. Serving as a complete resource, the book ensures aspirants stay updated with the latest trends and ace the NEET/ JEE 2025 exam.