Dear Sakthi, with 50% as aggregate, you clear your eligibility to appear for NEET. Now you haven't mentioned which State you beong to.From your previous question, considering the fact that you belong to OBC and you can certainly score 450, you can participate in the 2nd round of counselling of your State Quota. The cut off for OBC is 40% of the top score in NEET. So if the NEET topper has scored say 600, even if you score 240, you will be qualified in NEET. But because not every qualified can get admisison in a Medical college, assuming you score 450, you can atleast get a seat in a Private Medical college. This is just an assumption because you haven't mentioned the state you belong to. However, if you want further information, please mention the State that you hold domcile of and we can help you further. For a seat in a Government Medical College, you should score nothing less than 550.