Assuming asking for BHU PET Entrance Exam, I would suggest you to go through with the previous year papers to know the difficulty level of the exam, You can also revise the class 11th, 12th & Graduation syllabus of the paper to which you wish to apply for BHU PET entrance Exam. The exam is not very tough, You can crack it with little hard work. You can check the previous year papers of BHU PET with the given below link.

https://university.careers360.com/articles/bhu-pet-sample-papers

Good Luck!