Well,it's really easily, any one language subject i.e hindi or English in your case. Rest three could be any as long as that subject has maximum of 70 marks in theory and maximum of 30 marks in practical.Since you are a science student their would be deduction from your top 4 percentage. The deduction varies from college to college and one more thing girls are given about 1 percent advantage while seeking admission in any course at Delhi university. Good luck.

Hope you got the answer you are looking for thank-you.