How was your interview experience for IIT Gandhinagar for an MTech in mechanical engineering?

My brother had to appear for an online interview because he applied during the corona time. He joined Google Meet on time and began with his introductions. The interviewers asked him a number of questions like

• Describe the college you did your bachelor's from and the placement scenario there
• Is there any topic you are most comfortable with for the technical questions?
• What is compressible flow and compressible fluid?
• what is internal energy?
• PV^? what are its assumptions?
• Define isoentropic process
• dh = M Cp dt where can we apply this? Is it valid for gases only?
• Define Cp and Cv
• For solids why do we use Q=mcdt .what is C here?
• Why is solid C constant here?

Basically, he was bombarded with a lot of technical questions although they helped him a lot. From the interview experience, he arrived at the conclusion that to ace the interview one must have revised the notes he/she prepared while studying for GATE.