B.Sc Entrance Exam

https://www.tcyonline.com/exam-preparation/801187/b-sc-agriculture
Just visit here.

You should practice more questions and solve previous year questions. Also, you should revise you class 11th – class 12th concept.
Good luck.

To the best of my knowledge, there is no entrance test for B.Sc. In DU. The admission is conducted merit-based as determined by various cutoffs issued by DU.

Kindly predict your college in this college predictor. JEE Main rank predictor is an online tool which predicts the candidates rank range and probable colleges based on the difficulty level of the examination, average marks scored in JEE Main and seats available in IITs, NITs, GFTIs, and other SFTIs. The rank predicted might not be accurate but it certainly does give an idea to the aspirant. Know your college admission chances based on your JEE Main Rank, Home State, Caste, Gender, etc. Here https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor
Hope this helps.
Good Luck.

You can give NEET & AIIMS or any other medical entrance exams as admission criteria. Good luck.

https://www.shiksha.com/college/st-xavier-s-college/xavier-s-bms-entrance-exam-syllabus
Check The link to know about the syllabus and more. Good luck.