Himanshu pandey’s Advance problems in Organic chemistry is a great book for people preparing for JEE Advanced examinations there are lot of challenging problems to solve. This is definitely a helpfull book as here organic chemistry most important topics are distributed as different chapters and even a lot of practice subjective and objective questions are provided. Definitely worth buying. You can buy this book by given link below
You can also download the PDF here in case you want to check out this book .
Note : i do not encourage piracy. This PDF material is only for students who are poor to afford quality education. I only like promoting the useful content to students preparing for and other exams.
(or) I strongly recommend to purchase the book to study easy and support the author.