Hello Hussain,

If you want admission by NRI quota you will have to pay a lot of money if you want admission in Tamilnadu there may be college where you can get admission with less fees but they will not be good. Best option is NIT there is a test called SAT2 it is comparatively easy and the fees is also almost same for NRI and Indian students. For IIT you will have to qualify JEE mains and then JEE advanced. Best of luck.