The JEE Main exam for B.E./B.Tech consists of three subjects: Physics, Chemistry, and Mathematics. Each subject typically contains 30 questions, making a total of 90 questions. These questions include multiple-choice questions and numerical value-based questions. Candidates are usually required to answer 75 questions in total as some numerical questions are optional. Each correct answer carries 4 marks, while 1 mark is deducted for each incorrect multiple-choice answer. The total exam duration is 3 hours and the exam is conducted in computer-based mode.