Dear Aspirant,
You could go with these subjects for the admission as the condition is you must have to have the subject you are applying for in one of your best four. As you are applying for chemistry it won't be of any problem if you go with IP as your fourth subject.
Hope this helps.
Here are a few links for you.
https://university.careers360.com/articles/du-cutoff
https://www.careers360.com/question-which-is-the-best-du-college-for-bschons-computer-science-ug-course-2018
Thank you.
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