RRB NTPC 2015 (CBT-1) exam held on 16 April 2016 (Shift 1) is a preliminary computer-based test for non-technical popular categories in the Railway Recruitment Board. This exam evaluates candidates on subjects like General Awareness, Mathematics, and General Intelligence & Reasoning. The test pattern includes multiple-choice questions with a total of 100 questions to be solved in 90 minutes, aiming to shortlist candidates for the next stage. It serves as a key step for various railway job recruitments.