ogpa 7 is difficult to achieve in bvsc and ah course?
See this kind of stuffs entirely depends on the university under which you are studying. There are some universities in India where scoring is not very easy. So it may be difficult for your university. But the point is if you understand your subject well and attentive all over the time then scoring isn't hard for any university. You have to be sincere enough with the studies and you may achieve a great marks.
I hope my answer helps you. All the very best for your future endeavors!