Hi Harsh.

You will need a central OBC certificate for claiming your reservation in NEET, if you get a seat under reservation. The state certificate won't be enough. This is because there can be different list for the categories under state and central government. So, what you can do is, call the helpline numbers and ask them if stste OBC certificate is enough or not. If not, obtain the central certificate from the concerned authorities.

https://cbseneet.nic.in/cbseneet/contact.aspx

You can get the helplione numbers from the above page.

Good Luck.