Firstly it depends on the college .I mean if you are doing B.Tech from NIT or IIt then all branches will have good scope in future.Generally the order is CS mechanical electrical civil then other.But this doesn't mean that you are sure shot to get the job.This all depends on your work in your field.I would say if are doing CSE from a good college then tou will surely get a job .Good or not but you will get it.Other branches are considered inferior to CS.