Official Physics Wallah EaJEE Notes for Organic Chemistry (Class 11th + 12th) by Rohit Agrawal Sir (RA Baba) and Shubh Karan Choudhary Sir (SKC Sir). Known as the "Backlog Killer Blue Book". It covers concepts from basic to advanced level with short tricks. Excellent condition, crisp pages, and perfect for quick JEE revision.