Hello applicant,

Both the branches metallurgical as well as biotechnology are good in IIT Madras. They have a better scope but if you are having a choice between them I will recommend you to go with your interest.

go through the curriculum of both metallurgical engineering and biotechnology engineering.

The one which excites you and develop interest in you choose it.

I will recommend metallurgical engineering in IIT Madras.

Hope this answer helped you.