I applied through college or university. The process took 1 day. I interviewed at Boston Consulting Group (Bengaluru) in Feb 2018
Interview
there were 3 rounds
1- aptitude, English ; online test
2- F2F interview
3- F2F interview
Test was easy and out of 150, 80 qualified for the next round. 2nd round depends on your luck. If the panelist is from your branch , you are out no matter what the job description says.
Some people were also asked about some case studies.
Interview questions [1]
Question 1
Number of Cigarettes sold in one hour within a 2km circumference of the college
Very intense case interviews, usually run by a project leader or senior analyst. They will ask you a lot of questions and follow up questions. Be prepared! Most of them are nice, not all, so be ready for a tough hour.
Case study and personal experiences. They give you a lot of material to prepare with, it's a lot about structured thinking. Make sure you prepare the case study structures and know what experiences you can use to answer.
They were looking for someone who would be willing to jump in to multiple roles, not just the one advertised and the pay did not reflect my expectations for the level of work they wanted.