Is it possible to do B.Sc. with only one subject from Uttarakhand Open University, Nainital?

The Kumaun University, Nainital offers B.Sc pass courses where you have to study combination of subjects or three subjects whole year. The basic eligibility criteria for getting admission in B.Sc. Is that candidate must have passed 10+2 examination with PCM/B subjects. However, the Kumaun University