Hey!

It depends on your interest, as if you have interest in electronics, semi conductors etc and you are good in mathematics/Physics then you must choose ECE. But if you have interest in softwares, applications, programming languages etc then you must choose CSE. But as per the scope of these two branches, they are almost equal as demand for these both branches is increasing day by day. Also, if you have been allotted ECE seat and you have no option of upgradation then go for it. There are chances in the colleges that you can shift your branch by performing good in academics in first year (it happens in most of the colleges, check for yours).

Thankyou