The thoroughly revised and updated 7th Edition of Disha's Bestseller 144 JEE Main Chemistry Online & Offline Chapter-wise & Topic-wise Previous Year Solved Papers provides the last 22 years ONLINE (2012 - 2023) & OFFLINE (2002 - 2018) papers. The book contains a total of 144 papers - 18 papers of JEE Main/ AIEEE from the year 2002 - 2018 held OFFLINE including the AIEEE 2011 Rescheduled paper and 126 JEE Main papers held ONLINE from 2012-2023. The book includes all the 24 papers held in 2023 - 12 of Session I (held in January & February 2023) & 12 papers of Session II (held in April 2023). The 144 papers are distributed into 31 Chapters exactly following the chapter sequence of the NCERT books of class 11 and 12. The questions in each Chapter are further divided into 2-4 topics. The Questions are immediately followed by their detailed solutions. The book constitutes of 3940+ MCQs & 830 Numeric Value Questions (NVQs) with Solutions. Some same or similar (data change) questions have been marked in the book and have been provided once so as to avoid repetitiveness.