If you are planning between these two, NITC CSE is a really good option. They offer cushy packages and decent companies visit the institute.
According to the recent placement report, the highest package offered is INR 49.75 lakhs per annum with an average of INR 11.58 lakhs per annum. A lot of companies like Aakash AESL, Bosch, Nokia, and HDFC visit the college.
When it comes to MNNIT the course curriculum of both IT and CSE is the same and there is no such difference overall. The placements are good too. The highest CTC offered is INR 49 lakhs per annum whereas the average salary is INR 10.28 lakhs per annum. Companies like BYJU, Amazon, and Capgemini hire students regularly from the campus.
Eventually, it boils down to which college meets your needs better.