You can check the exam pattern below -

Exam Mode - Offline(Pen/Pencil-Paper based test)

Test Paper Sets - Three

Total questions - 150 questions

Type of questions - Multiple Choice Questions (MCQs)

Total Marks - 450 marks

For reference, you can go through the below link-

https://university.careers360.com/articles/bhu-uet-exam-pattern

I would suggest you to download the previous year papers through below give link -

http://bhuonline.in/old-qus-paper-entr.html

Good Luck!!!!