Yes, you are eligible for NEET.

If you're studying in the 12th grade science stream with Physics, Chemistry, and Biology as your subjects in Bihar Ma indaa education board Patna, you meet the basic eligibility criteria for the NEET exam.

The NEET exam is open to students who have completed their 10+2 or equivalent examination with Physics, Chemistry, and Biology as compulsory subjects.

Please note: There might be specific eligibility criteria set by the conducting authority for the NEET exam in India. It's always recommended to check the official NEET notification for the most accurate and up-to-date information.