The thoroughly Revised & Updated 19th edition of the book "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). Thus the Book covers 46 IIT JEE/JEE Advanced Papers 1 & 2 and 134 JEE Main Papers (126 Online + 8 Offline).