According to the Big Bang Theory, the universe originated and continues to expand from an extremely densely packed mass (or group of masses) at extremely high temperatures. According to the Big Bang Theory, approximately 13.8 billion years ago, the universe was born and it is continuing to expand. In addition to being designed to reinforce basic concepts regarding the Big Bang Theory, these Multiple-Choice Questions are also helpful in improving scientific literacy and in helping prospective students prepare for the SSC, JKSSB, Banking, Railways, and other general science-based examinations.