Hi Vishwajeet,

In order to get eligible for applying in neet one has to secure good marks because if you will be thorough about your subjects then only you can achieve good marks in neet and will get a chance to choose government college of your choice.

There's definitely a minimum criteria set for marks secured in 12th standard which varies according to your category .If one belongs to unreserved category he/she has to secure 50% marks in 12th standard whereas for the reserved like SC/ST/OBC it is 40% and for the physically handicapped it is 45%. Study well and get a god rank 

All the best