No, there is not any particular requirement in 12th board to get admission in CMI's Undergraduate Programs.
However one has to pass his/ her 12th Board Exams with sufficient marks and has to qualify its entrance exam (or ateast one of olympiads INMO, IMO, IPhO, etc.) to get admission.
For further information regarding eligibility and admission process, Kindly visit:
www.cmi.ac.in/admissions/
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