Hi

Actually, Admission in most of the BSc colleges/ universities including DU is  through class 12th marks only but yes there are some colleges/ Universities like  BHU which conduct entrance examination for admission in BSC

Some of the top entrance examination for BSC is provided below:-

-------------------) Banaras Hindu University Undergraduate Entrance Test (UET)

-------------------) Allahabad University Undergraduate Admission Test (UGAT)

-------------------) Central Universities Common Entrance Test (CUCET)

-------------------) ICAR - AIEEA UG for admission in bsc agriculture, fishery etc

-------------------) TIFR GS :- for admission in BSc course offered by Tata Institute of Fundamental Research

-------------------) IISER Aptitude Test - for  admission in 5 year integrated course

-------------------) AMU Entrance Examination for  B.Sc

-------------------) GGSIPU CET

For more details checkout:- https://www.careers360.com/courses/b-sc-bachelor-of-science

To help you further,

List some of the top colleges for BSc is provided below :-

---------------) St Stephens College, Delhi

---------------) Hindu College, University of Delhi

---------------) Miranda House

---------------) BHU

---------------) Loyola College

---------------) Jain University - [JU]

---------------) Madras Christian College - [MCC]

---------------) Hansraj College - [HRC]

---------------) Presidency College

---------------) Kalinga University

---------------) Fergusson College

---------------) CT University - [CTU]

---------------) St. Xavier's College - [SXC], Kolkata

---------------) Ramakrishna Mission Vivekananda Centenary College Rahara

---------------) Kirori Mal College - [KMC]

---------------) St. Xavier's College, Mumbai

---------------) Ramjas College

---------------) Ramakrishna Mission Vidyamandira

---------------) Sri Venkateswara College - Delhi

---------------) Stella Maris College

---------------) Atma Ram Sanatan Dharma College

---------------) Ramakrishna Mission Residential College - [RKMRC]

---------------) Deen Dayal Upadhyaya College

---------------) PSG College of Arts and Science

---------------) Mount Carmel College - [MCC]

---------------) Dyal Singh College - [DSC]

---------------) Christ University

---------------) Gargi College

---------------) Trivandrum University College

---------------) D.G. Ruparel College of Arts Science and Commerce

---------------) St Joseph's College - [SJC]

---------------) Sri Guru Tegh Bahadur Khalsa College - [SGTB]

---------------) Ramnarain Ruia Autonomous College

---------------) St Xavier's College, Gujarat

---------------) Jamia Millia Islamia University-[JMI]

---------------) Acharya Narendra Dev College - [ANDC]

---------------) Daulat Ram College - [DRC]

---------------) Jai Hind College - [JHC]

---------------) Kishinchand Chellaram College - [KC College]

---------------) Shyam Lal College - [SLC]

---------------) St. Aloysius College

---------------) Andhra Loyola College - [ALC]

You can get the complete list of BSc colleges by going through the link provided below :-

https://university.careers360.com/colleges/list-of-bsc-degree-colleges-in-india

Thank you