Indeed, some Indian schools grant admission to B.Sc. Occupational Therapy (BSc OT) programs on the basis of merit rather than entrance exams.  Numerous institutions offer seats based on your Class 12 grades, particularly if you fulfill the requirements (often 50% in PCB topics).  However, before applying, make sure to review each college's unique admissions procedure since some reputable universities may still administer their own entrance examinations.