Is there any specific subject required in a BA for doing a B Ed in VBSPU?

No, there is no such prerequisite for doing a B.Ed. Main line of studies like B.Sc, B.A, and B.Com are meant for gaining knowledge in that particular field. Whereas, B.Ed or anything related to education is meant for executing teaching methods, learning psychology of students. 

You may get Social Science or English as the main subject in B.Ed.