Hello student first train yourself to stay calm in front of board members that's the most important preparation tips for any Personal interview. Make a list of your hobbies things you like dislike do some few important questions about your educational background. There are various online portals which help students to prepare with their personal interviews you can recommend them.

Don't start answering before the questions end, listen the question carefully take few seconds and then answer with full confidence.

For more details refer to the link mentioned below - https://www.google.com/amp/s/bschool.careers360.com/articles/iim-personal-interview-how-tackle-questions-related-your-hobbies/amp

Feel free to comment if you've any doubt

Good luck