For the first round, each contestant in turn is given a set length of time, usually two minutes (one minute and a half in semi-finals, similarly hereinafter), to answer questions on a specialised subject which he or she has chosen. The contestant scores one point for each correct answer and may pass as often as desired. If the contestant responds incorrectly, the questioner gives the correct answer before continuing to the next question; answers to passed questions are read out only after time has expired.