Hey
68% is not a good score to get admission in Delhi University in science courses. However, you've mentioned your category but still with only this much score it is difficult to secure a seat.
For the science courses, in reserved category the closing cut offs were somewhat around 79-80%, estimating it to be the lowest.
You can also predict colleges here -
https://university.careers360.com/delhi-university-college-predictor
Thanks
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