Hey,
Yes, free exit is available for first round. You can leave the seat if you want to and the admission fees will be refunded. But if you join a seat in the second round of counselling then you are not allowed to leave the seat.
To get a list of colleges in which you will get a MBBS/BDS seat, you can use NEET College Predictor https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer
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