Is it common to get this question during fit interview at consulting firms? and if yes, how to reply it the best?
How to reply this question: Are you applying for other consultancy firms?
Sure you should say yes.
Everyone is applying for other consultancy. The interview process is so tough that it's difficult to know in advance which firm you will get, even though you are prepared.
So just say 'yes' and explain you want to be a strategic consultant so you maximise your chance of success, but of course if you had the opportunity to choose you would go to their firm :)
Yes, they may ask this question
You should answer "yes" since you want to be a consultant, excited about the industry and being a smart person you want to diversify the risks.
Look, everyone knows you are applying to a number of consultancies and that you will go to MBB if you get them. Just be truthful, and make sure to follow with a solid explanation of why this particular company is the one you are hoping to join