Eligibility is 10 + 2 with Physics and Maths. If you did not have Physics or Maths in 10+2, you are from Commerce or Arts, then you can give these exams from National Institute of Open School. Details of the same can be obtained from www.nos.org. These exams are held every year in the month of April and October. The eligibility of 10+2 with Physics and Maths is required at the time of appearing for the D.G.C.A examinations.