RRB Group D exam conducted on 19th September 2018 (Shift 1) followed the Computer-Based Test (CBT) pattern, featuring 100 multiple-choice questions from Mathematics, General Intelligence & Reasoning, General Science, and General Awareness & Current Affairs. The exam had a 90-minute duration, with a negative marking of 0.33 marks for each incorrect response. Candidates needed to clear this CBT stage to qualify for the next phases, including the Physical Efficiency Test (PET), Document Verification, and Medical Examination.