Almost all the older IITies are good for chemical branch but these four IIT are best among all other in terms of faculty,research and placements:

IIT bombay

IIT delhi

IIT kanpur 

IIT kharagpur

Hope this helps you.

hello manorama,

according to me

• IIT BOMBAY
• IIT DELHI
• IIT KANPUR
• IIT KHARAGPUR

these IITs are the best chemical engineering branch.

check all best college 

https://engineering.careers360.com/articles/iit-chemical-engineering-seats-expected-cutoff

Hope this is helpful to you.

Thank You.