The thoroughly Revised & Updated 22nd edition of the book ?Disha Errorless 49 Years IIT JEE Advanced (1978 - 2026) & 25 Years JEE Main (2013 - 2026) CHEMISTRY Chapter-wise & Topic-wise Solved Papers? is a comprehensive and integrated JEE PYQ book, designed specifically for aspirants of IIT JEE Advanced and JEE Mains. ? This powerful integrated JEE Advanced and JEE Mains PYQ book includes chapter-wise and topic-wise solved papers from 49 years JEE Advanced (1978 - 2026) and 202 JEE Main Papers (2002 ? 2026), including 184 Online Papers + 18 Offline Papers. It covers 100% PYQs of JEE Mains and Advanced for the complete JEE Advanced Syllabus including all JEE Main questions which are now not a part of JEE Main Syllabus. ? The book is divided into 31 chapters as per NCERT Books, making it the first JEE PYQ book to adopt the NCERT chapterisation format, closely aligning with the structure of JEE Class 11 and JEE Class 12 Chemistry textbooks. ? Each chapter is broken down into 2 Sections: JEE Main & JEE Advanced so that you can separately prepare for Main & Advanced. ? JEE Main section is divided into 2?4 topics (total 95 topics), and every topic includes 2 variety of questions - MCQ (Single Correct) and Numeric Answer Question. ? JEE Advanced section is divided into 2?4 topics (total 95 topics), and every topic includes a variety of 10 question types: FIB; True/False; MCQ (1 Correct); MCQ (>1 Correct); Passage-Based Questions; AR; Multiple Matching; Integer Answer; Numeric Value Answer; Subjective Questions. ? All previous Screening and Mains papers of IIT-JEE have been meticulously incorporated, making it a truly errorless and one of the most trusted JEE Advanced PYQ books. ? Detailed solutions are provided for every single question, ensuring 100% conceptual clarity. These are presented in a student-friendly language with diagrams, step-by-step reasoning, and complete explanations?making it an ideal reference among IIT JEE books and JEE Chemistry PYQ