Dear Naveen 

If by free medical seat, you are referring to an MBBS seat in a government college, then read on for the answer, otherwise (private colleges, etc.), kindly explain a little as to what you are looking for. 

MBBS seat in government medical college are allotted under two categories- one is All India Quota () and other being state quota. As per  of NEET 2018 by various experts and coaching centres, following insights have emerged till now:

• Anything below 550  in NEET 2018, will significantly lower your chances of getting admission under  quota.  admission entails 15% MBBS seats surrendered by states to MCC and are open to all aspirants. So, if you get 550+ in NEET 2018, then you may stand a chance of securing an  seat, also a government MBBS seat. 

• For State Quota, several factors come into play like number of medical seats available, number of aspirants, etc. So, if you could tell which state particularly you are targetting, I might be able to help you in case the data would be available. 

Also Naveen, you can use free-of-charge Rank Predictor of NEET 2018 to predict the rank you might get on the basis of your estimated NEET 2018 scores. This tool will predict the rank you might get after coagulating the data of many previous years.

Besides this, you may check the total number of government MBBS seats available in each state of India.

Hope it helps.

All the best.