Hii

To give NATA Exam, you just need to get 50% in Class 12th with Math with Compulsory Subjects. 10th Class marks doesn't affect your Eligibility Criteria.

Following is the NATA Eligibility Criteria-

10+2 or equivalent exam- Minimum Marks(50% marks), Compulsory Subjects(Mathematics).

So,if you are able to satisfy the above criteria then you are eligible for NATA Exam.

All the best.