From where I will get a Mobile number of any NIFT(Mumbai) graduate student ?so that I can clear my doubt?

Getting directly the personal number of anyone is very difficult. You can do one thing if you're on facebook then search for the students of NIFT Mumbai and there you can get not only aluminese but also the students that are currently studying in the college and you can contact them there this is a more descent way than to directly accessing their contact numbers.
Hope it helps.
Thank you.