The personal interview for a Ph.D. at IIT Madras takes place after a written test. In case your Undergraduate branch and PG branch are not the same, be ready to justify them with plausible reasons.

Some tips that will help you prepare for this interview are

• The most important thing is to speak about your interest in research on a particular topic
• Study the research projects related to Environmental Engineering from the official website
• Brush your basic knowledge and prepare well to present your PG project and answer questions about it.
• Discuss some current issues faced by your country, your stance on them, and ideas to resolve these issues.

All these pointers will help you ace the Ph.D. interview.