Here is a straightforward, critical review based on general student and teacher feedback (as I cannot access the book's internal solutions directly, but know its reputation).
There is no "official" single solution manual published by M. Karim himself; however, several resources provide step-by-step guidance: M. Karim Physics Part - 1 | PDF - Scribd m karim physics numerical book solution class 11
Because this book is so common, most telegram groups for JEE/NEET aspirants have PDF solutions floating around. Here is a straightforward, critical review based on