Yes, ofcourse you are eligible for JEE MAINS exam because, there is nothing like you should complete your 12th or +2 from the specific college then only you are eligible to write JEE MAINS, no nothing like that.

Instead you can opt any college as you have opted Rajiv Gandhi University of Knowledge and Technology, AP.

Hope you have got your concerned answer.

If you have further queries you can feel free to ask.