Placement will not be same for all the colleges not only in Bangalore but all over India. Every college have different figures for placements, admissions and features like infrastructure, staff, hostels and many more. In Bangalore BMS COLLEGE and Dayananda college are decent college for engineering studies.
You can check its reviews on their sites. But if you want to study in north particularly in or around Chandigarh than Chandigarh University is a good option. It is the best private university with the tag of fastest growing university. it has very good placements at very high packages. There have been more than 60 MNC's which have recruited Engineering students from Chandigarh University, IITs and NIT's where there have been 40+ MNC's who have commonly recruited fresh talent from University School of Business at Chandigarh University and IIMs.