The thing is it is on the student to figure out if they want a placement and a good one at that. Another thing that matters a lot when talking about placement is the course a student is pursuing. 

Mostly there are great placement opportunities if someone is pursuing a professional course. All of the mentioned colleges are great and will definitely put in their best effort for you to get into your dream company but in the end, it is the student who can make it or break it. If a candidate has amazing communication skills, knowledge, good grades, and talent then naturally he or she will get a good placement but coming to the choice of colleges, and the specificity, Christ University, KLS Gogte, and Nitte Meenakshi Institute of Technology are the ones that offer the best placement opportunities.