There’s not a single brand or type of laptop that the students of CSE at IIT Bhubaneswar uses. The choice of laptop is different for different people. Which laptop you are going to use depends on you and you should choose based on what you are gonna use the laptop for.
IIT CSE curriculum does not require a powerful laptop unless you are a true enthusiast of coding. Also, the CSE first-year course curriculum doesn't really require a laptop, so there is plenty of time to figure out what laptop you want. You can do all your academic work that an IIT CSE curriculum demands with any standard laptop which has 8GB RAM, at least 1 TB HDD, Intel i5 8th Generation, 7- 10 hours battery backup, optional graphic card. There are many good brands offering the above-mentioned configurations. Almost all the companies try to provide better service to their customers, although Dell, HP with the same configurations will be slightly expensive as compared to ASUS, ACER, etc. So, choose according to your need and budget.