Dear Arun, for starters, you need to study Physics, Chemistry and Biology in your 10+2 and score a minimum aggregate of 50% in these 3 subjects. It is 50% if you belong to General Category, 45% for PWD and 40% for OBC,SC,ST. Now that makes you eligible for NEET. Once you appear for NEET and secure a rank, you will have to study MBBS for 5 and 1/2 years which includes mandatory 1 year internship. Now all this while we had NEET PG as an entrance examination for MD/MS courses. But in the next 3 years, it is going to change. Based on the requisites after you finish your MBBS, you have to study MS and then you will be a surgeon.