Hello Rajiv

You will definitely be eligible for neet .

NIOS is government recognized and You can appear for biology exam through NIOS .

After you qualify biology subject , your aggregate marks in physics, chemistry and biology should be 50% . Then you can fill application form and can appear for neet.

Eligibility for neet

The candidate must have passed class xii with minimum 50% marks in physics,  chemistry and biology subjects .

You will have to use code 2 in neet application form.

To get more information you  may refer the link given below.

https://medicine.careers360.com/articles/neet-qualification-codes