Hey,

The minimum eligibility in order to sit for the entrance exam (TNEA) is that you need to score a minimum of 50% marks in your Class 12th from a recognized school or Institute.

I have attached a link that contains individual criteria for different courses. As you have not mentioned the course you are applying for so I can't help you with that.

https://engineering.careers360.com/articles/tnea-eligibility-criteria

So yes from the above criteria you are eligible. Just check the minimum marks criteria for individual courses.

Refer to the link above.

Hope that helps.