Dear Divyanshu, BHU LLB eligibility is that you should have a Bachelor's degree in any discipline with a minimum aggregate of 50% from any recognised University. IGNOU is a recognised University. This is the same for even DU LLB.  So you can apply for both DU LLB & BHU LLB. NIOS and IGNOU are both recognised institutions. So you are eligible for applying for both Universities.