Hi Vishal, you won't be able to get any branch in IIT Bombay. However, you'll be able to get a seat in these IITs. The closing ranks mentioned against them are of last year:

Indian Institute of Technology Roorkee-      Integrated M.Sc. - Chemistry (5 years) 1118

Indian Institute of Technology Kharagpur B.Arch. - Architecture (5 years) 1122

Indian Institute of Technology Roorkee Integrated M.Sc. - Physics (5 years) 1131

Indian Institute of Technology (BHU) Varanasi B.Tech. - Pharmaceutical Engineering & Technology (4 years) 1133

Indian Institute of Technology (BHU) Varanasi B.Tech. + M.Tech. - Bioengineering with M.Tech in Biomedical Technology (5 years) 1137

Indian Institute of Technology (BHU) Varanasi B.Tech. + M.Tech. - Ceramic Engineering (5 years) 1139

Indian Institute of Technology (BHU) Varanasi B.Tech. + M.Tech. - Pharmaceutical Engineering & Technology (5 years) 1143

Hope it helps.