Eligibility
The age limit for sitting the JEE is 25 years. For candidates belonging to SC, ST and PD categories, the relaxed age limit is 30 years.
Also, since 2007, candidates have been allowed to take the JEE a maximum of two times. This change was intended to reduce stress on applicants, and to discourage the concept of 'cram schools'. Also since 2007, students selected for admission to an IIT and paid the accepting fee, cannot attempt the examination again in the future.
Read more about this topic: Indian Institute Of Technology Joint Entrance Examination