As you have not mentioned about the course in which you want to take admission, but the college requires that the candidates must have passed 12th level or equivalent. Minimum 50% - 45% (40% for reserved candidates) marks for admission are required in 12th.
Admissions are done on the basis of merit and personal interview. You can apply online for admissions on the official website of Jai Hind College as registrations have been started since 31st may.
All the best!