Dear Astha ,  

Delhi University has a wide number of colleges and the cutoff for each college is different ranging from about90-99% for north campus colleges and 80-95% for South campus colleges. It entirely depends on which course you want to pursue from university of Delhi. Each course has a different cutoff for different colleges. 

Physics hons and chemistry hons. Take into account the marks of PCM whereas Maths Hons. Take into account the best of four marks. Most of the Reputed colleges have higher cutoff.  

Given your aggregate,  you are less likely to get a college of North campus,  but you have a good chance of getting a South campus college or an off campus college.  

There are some Girls colleges which you can try for which are... 

1)  Gargi College

2) Jesus and Marry college

3) Lady Shri Ram college

4)  Indraprastha college for women... 

So keep your fingers crossed, just a bit of luck can land you in a good college.