Hello Abhishek,

With 156 marks in B.A entrance for allahabad university general category, it would be difficult for you to get admission in main campus since the cut off is 165 marks and above for General. As for degree colleges/affiliated colleges of allahabad university, you would have to call the respected university and ask them.

More - https://university.careers360.com/articles/allahabad-university-cut-off

Hope this helps.