MadhuKumari
No, computer science or informatics practices are not required for CSE at any IIT. They start from the beginning and teach you everything you need to know.
Let me tell you a little bit about IITM. The CSE department of IIT Madras offers a one-semester course called Introduction to Programming. And this course is applicable to all branches (unless the branch’s department offers a separate course).
We had a fundamental course in my Physics Department called Foundations of Computational Physics, where we learned Python and Mathematica from the ground up. As a result, we skipped Introduction to Programming .
So, regardless of whether your 5th subject was CS, a language, sports education, or another topic, you can always take CSE at any IIT if you have the required JEE Advanced rank.
