As you will qualify the BSc examination with Biology and Chemistry as subjects then you have to use the NEET 06 code.

The documents required for NEET:

For phase 1:

• Passport and postcard size photograph,
• Left-hand thumb impression,
• Signature
• Self-declaration certificate for J&K aspirants.

For Phase 2:

• Category certificate,
• PwBD certificate,
• Class 10 certificate
• Citizenship certificate.

So you don't need the affidavit during the form fill up. But during admission if its required by the college then have to but in general any such affidavit related information are available.

To know more about NEET document specifics visit the link below:

https://medicine.careers360.com/articles/neet-photo-size-format-documents

I hope this answer helps. All the very best for your future endeavors!