The Combo of the thoroughly Revised & Updated 19th edition of the 3 books “Errorless 46 Previous Years IIT JEE Advanced (1978 - 2023) + JEE Main (2013 - 2023) CHEMISTRY Chapter-wise & Topic-wise Solved Papers” is an integrated book, which contains Chapterwise & Topicwise collection of previous JEE Advanced (including 1978 - 2012 IIT-JEE & 2013 - 23 JEE Advanced) & past JEE Main 2013 to 2020 (Offline Papers) and 2013 – 2023 (all 126 Online Papers).