Hey, first of all congratulations.... As u bags 77th rank ,i think u'll get good branch in good iit. basically it depends on your interest. choosing a branch is important but choosing a institute also.some thing i can say. u'll not get computer science anywhere in pre-established iit's(i can't anything about new iit's). may be u get electrical in iit-roorkee nd iit-guwahati. In bombay, civil,mechanical,also i think u can't get. in IIT-D,nd Kanpur ,same as above. In IIT-madras,kgp i don't have much idea. but i think u'll get there one of civil, mechanical.
In IIT-Roorkee, u'll surely get civil nd mechenical
Chemical u'll get everywhere. these r core branches...try to choose one of these. Personally say....give preference to IIT-B than others. Chemical in IIT-B is far better then mech or civil in IIT-Roorkee nd ghuwahati. As everyone know ...IIT-K is somewhat tough nd it's not easy life there. About iit-kgp don't have much idea...but better then iit-madras or ghuwahati.
I m in IIT-Roorkee. So i'll say ..living facility are best at here out of all. Lastly ....have preferences as for IIT's:- IIT-B>IIT-D>IIT-K or IIT-R>IIT-kgp>IIT-madras brabch:- electrical>mech>chemical>civil>others
Choose best combination...according to ur others interest nd other fectors i.e distance,living facility.
Don't choose new IIT's ....i m sure u'll get in good branch in old's one.
