hi apurva,

see iiit hyderabad is one of the best institute to study engineering courses, now it offers admission to three channels, either of kvpy/ jee main / dasa . for undergraduate courses you have two options, either you have to choose btech single course program of ece/ cse duration of 4 years or you may go for dual degree program which includes b.tech and ms course for research. hence for five years course you would awarded MS degree which is really beneficial for those who wants to go for research oriented field. the main difference between 4 years b.tech and five years dual degree program is mostly thesis based like if you chose computer science engineering than you may do ms thesis on Computational Linguistics/ Computational Natural Sciences/ Computing and Human Sciences. however you may go for ms or m.tech course after completing btech in reputed college of india or abroad, but it takes 2-3 years to complete. now see if getting a decent job after btech is your main concern than you should go for 4 years btech, other wise you are keen interest for research, or want to go for doctorate course in near future dual degree program is best for you.

hope it would help.