Hello payal 

Cutoff for any entrance exam depends on many factors like No. Of students appeared, difficulty level of the paper, highest marks scored and many more. Because of these factors every year cutoff changes and it's tough to predict. However an idea can be made through analysing Cutoff of previous years. The cutoff for BHU UET 2018 is as follows :- 

General- 1149( Cutoff rank) 265 (cutoffmarks) 

OBC- 797 (cutoff rank) 231 (cutoff marks) 

SC- 321 (cutoff rank) 140 ( cutoff Marks) 

ST- 196 (cutoff rank) 55 cutoff marks) 

Here's a link for more help - https://university.careers360.com/articles/bhu-uet-cut-off/amp 

Hope it helps :)

All the best :)