Hello student I'm sorry to inform you but no you're not eligible for NATA entrance examination as eligibility criteria says - Candidates must passed or appearing class 12 with physics chemistry and mathematics with minimum 50 percent marks aggregate from a recognized board.

For more updates refer to the link mentioned below - https://www.google.com/amp/s/engineering.careers360.com/articles/nata-eligibility-criteria/amp

Feel free to comment if you have any doubt

Good luck