For CBSE board, the cut off for General category is around 86%. 80% for OBC, 77% for SC and 72% for ST. I'm providing the official link below. You can have a more detailed information from there.
http://www.gauhaticommercecollege.in/sites/default/files/CUT%20OFF%20B.%20COM%201ST%20SEM%202018.pdf
Hope this helped. Good luck.
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