Hi aspirant

See cut offs are same for all the board and marks you got will be decider .There are very less chances that a BSEB will get seat in top ten colleges of DU. There are more chances for CBSE students to get into DU.

cut offs are also very high in DU . But seeing to your marks  and Eligibility criteria of DU to have Minimum 60% marks in xii Science for BSC hons with English subject. You are eligible for applying to DU colleges . Top colleges in DU are Ramjas college , Hindu college , Hansraj college, khalsa college etc.

As your percentage is very much less as compare to competition in taking admission your honors courses of du. So you are not going to get admission in du.

Hence i suggest you to take admission some another local colleges dont waste your time in looking for du.

all the best