This book is designed as a one-stop reference for the aspirants of West Bengal and Kolkata Police and Sub-inspector Examination. Considering the limitation of quality content available in Bengali for WBCS and other state level competitive examination, the book is developed with elaborate pedagogical features that covers all the subjects of WBCS main examination along with current affairs. Ample questions are provided after each chapter mapping against the trend of WB Police and Kolkata Police Examination. Practice Sets, provided in the book will certainly help developing conceptual clarity. The book will also be useful for the candidates of WBPSCMiscellaneous, Clerkship, and various other state level competitive examination.