Hey Dev ,
Greetings!

Eligibility Criteria - Will be announced a short while after your exams are over(May or June at max), on the Anna University website. But a general guideline is both CBSE & State Board students must have scored over 50% in Maths, Physics and Chemistry. But these change every year, make sure you are updated(i.e Check Home - Anna University )

Admission Forms: Forms are issued sometime in May or June(It can change, stay updated You can obtain it online( Home - Anna University , also this maybe free) or get a physical copy(for 500 RS) in a few institutions namely

• College Of Engineering Guindy
• Madras Institute of Technology
• The Government Polytechnic College
  
  Good Luck ! You can reply to this comment if you have any further queries , I will be happy to help .