Hey!

79.6% is quite a low score for clearing cutoff of B.Sc. Chemistry at Fergusson college, Pune. The cutoff is usually > 90% for non-Maharashtra residents. For Maharashtra residents, the cutoff is low. It also depends on your category: whether Gen/OBC/SC/ST. 

Yes, there is hostel facility for girls. There are 2 ladies block with a capacity of around 160. 

Best wishes!