Both CSE and IT follows the same curriculum till 3rd year of college. You will only find a few different subjects in your final year. IT on a broad scale deals with the networking and security part. On the other hand, CSE is all about the development of software, applications, and programming.
However, it is suggested that you opt for IT at IET Lucknow instead of UIT (RGPV) CSE if you are concerned about the placement scenario. It is so because IET has better placement offers. Not only this but the overall structure and curriculum of IT are extremely good. Being an autonomous institution, IET Lucknow offers more benefits than the other institutions.
The average package offered to the CSE students at IET is around INR 4.5 Lakhs per annum as per the placement report of the institute in the year.