Hi, admission to DU is based on your aggregate score of four best subjects and not the overall aggregate score secured in the qualifying exam. You can check the possible colleges available by visiting careers360 website and using the DU 2019 College Predictor.

I will still estimate and list down some of the colleges and the respective B.Sc courses you can apply for you:

• Acharya Narendra Dev College - B.S.c Life Sciences, B.Sc. Physical Science with Electronics
• Atma Ram Sanatan Dharma College - B.S.c Life Sciences, B.Sc. Physical Science with Electronics, B.Sc. Physical Science with Chemistry
• Bhaskaracharya College of Applied Sciences - B.Sc (Hons) Botany, B.Sc (Hons) Electronics, B.Sc (Hons) Instrumentation, B.Sc (Hons) Polymer Science, B.Sc (Hons) Zoology
• Deshbandhu College - B.Sc. Applied Physical Sciences with Industrial Chemistry, B.Sc (Hons) Botany, B.Sc (Hons) Zoology, B.S.c Life Sciences,  B.Sc. Physical Science with Chemistry, B.Sc. Physical Science with Computer
• Dyal Singh College - B.S.c Life Sciences,  B.Sc. Physical Science with Chemistry, B.Sc. Physical Science with Computer
• Keshav Mahavidyalaya - B.Sc. Physical Science with Computer
• Maharaja Agrasen College - B.Sc. Physical Science with Chemistry, B.Sc. Physical Science with Computer, B.Sc Mathematical Sciences, B.Sc (Hons) Electronics
• Motilal Nehru College - B.Sc. Physical Science with Computer
• P.G.D.A.V. College - B.Sc Mathematical Sciences
• Rajdhani College - B.Sc (Hons) Electronics, B.Sc. Physical Science with Chemistry, B.Sc. Physical Science with Computer, B.Sc. Physical Science with Electronics
• Shivaji College - B.S.c Life Sciences,  B.Sc. Physical Science with Chemistry, B.Sc. Physical Science with Computer
• Shyam Lal College- B.Sc. Physical Science with Chemistry, B.Sc. Physical Science with Computer, B.Sc. Physical Science with Electronics
• Sri Aurobindo College (Day) - B.Sc (Hons) Electronics, B.Sc. Physical Science with Chemistry, B.S.c Life Sciences
• Swami Shardhanand College - B.Sc (Hons) Botany, B.Sc (Hons) Zoology, B.Sc (Applied Life Sciences)
• Zakir Husain Delhi College - B.Sc. Physical Science with Chemistry, B.S.c Life Sciences, B.Sc (Hons) Electronics

These are the list of colleges and courses in which you can easily get admission by 2nd cut off.

B.Sc. (or B.Sc General) Bachelor’s degree and B.Sc. Bachelor’s degree (Hons), are both academic degrees given to undergraduate students. B.Sc (Hons) is much more specialized as compared to the B.Sc (General) degree, and academically, B.Sc (Hons) is a more standard degree as compared to B.Sc (general). And DU only offers Hons courses in B.Sc unlike in B.A.

B.Sc. Honors Course Details

B.Sc (Hons) in India is generally a three-year degree program which develops advanced theoretical and research skills.

It helps in building an advanced professional or academic career

It is an appropriate course for students who wish to pursue Master of Science (M.Sc) or Doctor of Philosophy (PhD) and a research or academic career

This program facilitates students who wish to pursue an independent research project in an area of interest under the supervision of an academic staff member

B.Sc (general) Course details

B.Sc (program) or simply "B.Sc" is a three-year undergraduate academic degree, designed to provide the students with foundation knowledge possible for a science-based career.

This program facilitates a large range of career possibilities

It provides a broad foundation in the sciences, with a special focus on multidisciplinarity

Some good colleges for B.Sc General are:

• St. Xavier's Mumbai: A minimum of 45% marks in H.S.C from Maharashtra Board or any other recognized board. Selection is based on Merit in the qualifying examination.
• Mount Carmel Banglore: 10+2 in Science stream with at least 50% marks in aggregate. Students must have studied that subject or the relevant subject at 10+2 level. Candidates will be shortlisted for the interview round after declaration of 10+2 result
• Jain University Banglore: Pass in 10+2 from a recognized board. Selection is On the basis of marks in the last qualifying examination and score in JET.
• VELS University Chennai: Selection is Merit-Based and The admission the courses are on Merit basis on VELS Merit Based Examination score & Merit based on the percentage of marks secured in the qualifying examination.
• Mithibai College of Arts Mumbai: Passed XII std. Examination of the Maharashtra Board of Higher Secondary Education or its equivalent with Science stream and secured not less than 45% marks in aggregate at first attempt. Admission to the UG courses in Mithibai College is done on the basis of marks obtained in the qualifying exams.
• Chitakar University Patiala: Chitkara University offers the B.Sc course in 8 different specializations. Candidates who have passed the 10+2 examination are eligible to apply for the B.Sc. Admission to the B.Sc. will be done on the basis of merit in the 10+2 examination and based on performance in the personal interview conducted by the University.

Hope this will hwlp you choose your desired course and college. Good Luck