There was a need of good solution book for practicing and to solving previous year papers of RPSC Assistant Engineer (A.En.) Mains Examinations. ZONE TECH has come up with such a book which contains All Previous years solved papers Of RPSC and other PSC’S with their detailed solutions. The book is segregated in topic wise manner that includes previous year papers questions with their solutions. This book includes 2 marks, 5 marks and 20 marks Questions and their solution. It is also useful for various other State Engineering Services Examination. ZONE TECH team has put sincere efforts in framing and compilation of questions with accurate explanations.