What types of questions are asked in the written test and interview at IIT Guwahati for Mtech in Environmental Engineering?

My brother has given the written test and interview at IIT Guwahati for MTech in Environmental Engineering and he shared the list of questions that he was asked.

Written Test: It is taken to evaluate your accuracy and grasp of concepts. The written test is usually very easy with questions covering basic concepts both numerical and theoretical. Enough time is given and all you need to do is focus on writing accurately.

Interview

The interviewer asks you basic questions regarding your

• Research interests
• Final year project (his project was on sullage treatment using wetlands)
• Water treatment process
• Surface Overflow rate
• Coagulation theories

One suggestion from my side is that always go for the field that intrigues you in MTech else you will end up suffering for 2 years.