Railway Non Technical Book (Hindi) is published by Kiran Prakashan. It is available in Hindi medium. Best Guide Book cum Reference Book for Railway / RRB Exam Preparation. Consist of Previous Years Solved Question Papers. RAILWAY NON TECHNICAL (GRADUATE LEVEL) ONLINE EXAM CBT – 2018 QUESTION BANK (WITH FREE CD) (HINDI). Commercial Apprentice (CA), Traffic Apprentice (TA), ECRC, Goods Guard, Junior Assistant Cum Typist, Senior Clerk cum Typist, Assistant Station Master and Traffic Assistant.