Hi,

Once result are declared for JEE advanced, students need to register themselves for JOSAA Councelling. JOSAA is the body responsible for allocation of seats in NITs, IITs, IIITs and other government funded Institutes. Once you register on JOSAA platform, student need to fill choices of various colleges. After that College is allocated based on the rank of students.

In order to know what colleges you could get, use this tool: JEE Mains College Predictor

I hope this will solve your query.

Thanks!!!!