Hello aspirant!!!

To join architechture in IIT you need to qualify JEE ADVANCE.

you also have to qualify for NATA(NATIONAL APTITUTE TEST IN ARCHITECHTURE)

Architecture Aptitude Test( A TEST THAT IS NEEDED TO QUALIFY AFTER JEE MAINS) Only students who have qualified the JEE Mains are allowed to sit for JEE Advanced. If a student wants to join B. Arch in IIT Kahargpur and IIT Roorkee , he/she has to first clear JEE Mains Parer 1 (not Paper 2 ; Paper 2 is only for admission to B.ARCH.

THANKS & REGARDS.