BHU or Banaras Hindu University, Varanasi conducted an undergraduate Entrance Test (UET) for admission to various undergraduate courses alogn with Bsc Hons, as you want its syllabus info so I am telling same here:

BHU Entrance Exam Syllabus for Bsc Hons

B. Sc. (Hons.): (Maths group) - There shall be one Paper of 150 minutes (Two and half hours) duration carrying 450 marks containing 150 multiple choice questions based on +2 examination or equivalent. The Paper shall comprise three sections: Physics, Chemistry and Mathematics, each containing 50 questions.

B. Sc. (Hons.): (Bio group) - There shall be one Paper of 150 minutes (Two and half hours) duration carrying 450 marks containing 150 multiple-choice questions based on +2 examination or equivalent. The Paper shall comprise three sections: Physics, Chemistry and Biology, each containing 50 questions.

Admission eligibility
B. Sc. (Hons.) Maths Group:-
Students must have passed 10+2 or equivalent examination securing a minimum of 50% marks in aggregate in subjects of Physics, Maths plus any one of the following: Chemistry, Statistics, Geology, Computer Science, Informatics practices and Geography and must have passed in each of the concerned three subjects.

Age: Not to be more than 22 years on 1 st July of the year of admission.

B. Sc. (Hons.) Bio. Group:-

Students must have passed 10+2 or equivalent Examination securing a minimum of 50% marks in aggregate in the subjects Physics, Chemistry plus any one of the following: Biology, Geology and Geography and must have passed in each of the concerned three subjects.

Age: Not to be more than 22 years on 1 st July of the year of admission.

Address

Banaras Hindu University
Varanasi, Uttar Pradesh 221005