RRB Group D exam conducted on 20th September 2018 (Shift 2) followed the Computer-Based Test (CBT) format, featuring 100 multiple-choice questions from Mathematics, General Intelligence & Reasoning, General Science, and General Awareness & Current Affairs. The exam lasted 90 minutes, with a negative marking of 0.33 marks for each incorrect answer. To be eligible, candidates were required to have passed Class 10 (Matriculation) or possess an ITI certificate from NCVT/SCVT, along with fulfilling the age and physical fitness criteria set by the Railway Recruitment Board (RRB).