In my opinion both are good Colleges. You can choose your choice going through the information below.

NITTE MEENAKSHI: 

Placements: Good companies come, and 100% placements are there if the grades are good. For placements, you have to maintain good GPA and also get the internship from a good place. You have to work on your project intensely, and it is one of the most important things that will help you in your interview.Companies like Nutanix, Microsoft, M-SIGMA, VIPRIT and Infosys visit the college to offer placements every year. 

CHRIST UNIVERSITY: Placements: The placements on the campus are decent. The salary package goes up from 6 lacs per annum to 12 lacs per annum depending on the company and the competency of the candidate. Many good and reputed companies come for the placements. Around, 70 percent of the students got placed from the college itself.