It depends on the course,in which you are going to give entrance. 

Maximum students gives entrance for BHU bsc.maths. This university also take entrance for bsc.biology,bcom,ba.

In BHU  entrance there are 150 questions each of 3 marks(total=450). The students who scores 300+ can easily take admission in this entrance.There is also negative marking in this entrance of 1 mark.

There is also some relaxation for quote students.