You have to be very good in basic topics like Introduction about self, your academics, your school and college life, lessons, and some other PI/WATtopics like:

Hard work or Smart work

Indian History

Business and economy

Social Issues

and be prepared for abstract topics like Gender Bias etc..

Personal Interview stresses on the following areas:

Goal Clarity

Knowledge

Communication Skills

Personality traits

It is important to know why MBA is important to you so be prepared with these.

Hope this helps.