Hi

It's completely ok even if you are a repeater in 12th or had failed in the first attempt and then passed in the 2nd attempt, what matters is that you have passed it, you won't have any problem due to this in NEET

What's your aggregate% in pcb in 12th , you have just mentioned that you have just mentioned that you have got 50% into 12th after repeating but your overall % obtained by you in  class 12th is not considered for Neet eligibility criteria , only your aggregate % in PCB is taken in account for considering your eligibility.

And
Yes , you are eligible for appearing in NEET 2021 examination  even if you are in the first year of your BSc ,provided you meet its eligibility criteria

This is because,

There is no rule which says that if you are doing BSC or any graduation you become ineligible for Neet examination, as to be eligible for neet what all one needs is :

*to must have passed 12th board examination with physics, chemistry ,biology/biotechnology and English and must have got at least  50  % in aggregate of PCB  i.e Physics, Chemistry and Biology/Biotechnology  in 12th examination  if belongs to general category , or   at least  40%  in aggregate of PCB if belongs to  Obc/ Sc /st category  , or at least 45 % in aggregate of PCB in case of general pwd candidates to be eligible.

So if you fulfill this  criteria then you are definitely eligible for Neet 2021 examination .

*Also, there is no upper age limit for Neet examination

For detailed information about neet examination go through our page for which link is provided below; -

https://medicine.careers360.com/articles/neet-eligibility-criteria

If you have any other doubt then you can always reach us to clear them :) we are always available to help you out and guide you

Thank you