The PI round is entirely based on your Statement of Purpose (SOP). As you don't have work experience, it's essential to be well-versed in current affairs and important economic numbers. Elections and recent events may be the focus of the discussion. Make sure to give it your best shot and prepare thoroughly for the interview.
Remember, the CD-PI round is an opportunity for you to showcase your communication skills and analytical abilities. So, be confident, articulate, and well-prepared.