Hi aspirant

If you have domicile certificate issued by Tamil nadu government then definately you are eligible for tamil nadu quota.

If you have your own house in tamil nadu or you parent's house/grand parent's house then you can easily get your certificate .

If you don't have certificate yet apply for it at your district block office.They will tell you all the process.

It doesn't matter where you have studied ,the important thing is your certificate is issued by which state?

Hope this was helpful.