I have given the same entrance for MBA and according to that micro presentation rules are as follows:-
- you will be given 40 + topics
- you cannot choose any topic
- go through all of them and have an overview for each one of them
- in 2nd round you will be put in a batch of 10–12 candidates
- you will have to randomly pick up a chit with a number which will signify your listed topic
- a verbal presentation of 90 seconds will have to be given on the spot.