Hello Aman,
Both the IITs are best with their branches,if we talk about IIT guwahati,For that you can go through this link- https://www.iitg.ac.in/acad/CourseStructure/MTechTSE.htm and about biotechnology in IIT kharagpur,you can go through this link, https://www.shiksha.com/engineering/course/m-tech-in-biotechnology-and-biochemical-engineering-indian-institute-of-technology-kharagpur-293513
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