Indian Institute of Technology Entrance Requirements

I want to be an engineering graduate from IIT (Indian Institute of Technology). Give me detail of its entrance test? What are other important points to keep in mind for its admission?

[Pathak]

A candidate has to satisfy ALL the eligibility conditions given below:

A candidate can give this exam only twice, in consecutive years.
Candidates should atleast passed the qualifying examination in the year of the test or the year previous to it. They should also satisfy the specific eligibility criteria in the qualifying examination.

candidates belonging to General (GE), Other Backward Classes (OBC) and DS categories require at least 60% marks aggregate in their Qualifying Examination
.
Candidates belonging to Scheduled Caste (SC), Scheduled Tribe (ST) and Physically Disabled (PD) categories must secure at least 55% marks in aggregate in the Qualifying Examination.