For admission in B tech course offered by Indian institutes of technology colleges you have to pass an entrance examination with the name of JEE joint entrance exanimation ..

Age limit :
You must be born on or after October 1, 1989 to be considered for the JEE Main 2014.
SC/ST/PwD Candidates will have a relaxation of the upper age limit by 5 years.
SC/ST/PwD Candidates must be born on or after October 1, 1984.

Eligibility:
You have passed in final examination of +2 (Class XII) or its equivalent qualifying examination with physics , chemistry and mathematics subject from a well recognized university

General and OBC candidates must have secured at least 60% marks and SC/ST candidate securing 55% marks in 12th can apply for IIT-JEE exam.
Number of Attempts:
The number of attempts which a candidate can avail at JEE (Main) shall be limited to 03 (three)