hey ramya
with 230 marks and belonging to st category you might not get govt college in tamil nadu. as per previous year the cutt off of tamil nadu under state quota was more than 530 marks for st category. however we are not sure about this year cut off as it changes every yeear depending on no.of candidates, no.of seats and difficulty of exam.
to predict colleges on the basis of yur neet score visit following link https://medicine.careers360.com/neet-college-predictor?icn=neet_clgpd_landing_page&ici=clevertap-sticky-web
goodluck
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