Hii Dhruv!
You need to sit for WAT ( written ability test ) and GD ( group discussion ) rounds once you clear the MBA entrance examination. Topics asked in WAT are commonly the general knowledge things and current affairs. You will get a detailed information on the same in the following link -
https://www.google.com/amp/s/bschool.careers360.com/articles/latest-wat-topics-for-iims-and-mba-admissions/amp
Hope this helps.
Good luck!