hi,
see the previous years papers are not available in official site. however questions will be arranged by 12th course syllabus of biology, physics and chemistry. careers360 has sample papers of cmc vellore which you may studied as a reference. follow the below link to download:
https://medicine.careers360.com/download/sample-papers/cmc-vellore-medical-2012-last-year-question-paper
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