Hey Anjali,
First of all about BHU, with 750 rank in management course entrance examination, you don't have much chance, although there is an outside chance, but you can't be reliant on that, look for some other options. And then again, same is the case with 22 marks in the CUCET, you don't have much chance to get central university, tamil nadu. But cut offs change every year, so you can hope for the best. Hope this helps, thank you for asking question here at careers360.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile