What is the minimum rank required to pass NEET exam??

Hello. There is nothing such as minimum rank or marks. You get eligibility in NEET. To be eligible for admission in MBBS/BDS courses, students have to secure minimum 50% percentile in National Eligibility Cum Entrance Test. In case of Scheduled Caste/Scheduled Tribe/Other Backward Classes, the minimum 40% is required. For candidates of locomotor disability of lower limbs, the minimum percentile is 45% and 40 percentile for SC-PH, ST-PH & OBC-PH candidates. The percentile will be determined on the basis of highest marks secured in the All India common merit list.
But to get a good govt seat your score should be more than 550. Last year the 50th percentile was at 131 marks.