Hii Manthan!

For taking admission in b.arc you have to firstly crack jee main ,paper1 or paper 2,well for paper one is online mode while paper is taken in offline

because it consists of drawing question well after jee main you have  to crack jee advance and only two IITs crrently offer b.arc course IIT kharagpur and IIT rorkee. thereafter one more will be taken by the instituton after jee advance i.e jee advance AAT. for detail information about jee advance AAT you can visit the below link

https://engineering.careers360.com/articles/jee-advanced-aat

Hello greetings

To take admission in  architecture course at IIT which is offered by only two IIT that is IIT Kharagpur and IIT Roorkee you need to qualify architecture aptitude test after qualifying JEE advanced.

The complete process includes first yma student need to appear for JEE Main paper 1 and once student qualify JEE Main paper 1 he will be eligible to appear for JEE advanced then you need to appear for JEE advanced and qualify it with a good rank  then you need to appear for architecture aptitude test which is conducted by IIT after the result of JEE advanced and only those who qualify JEE advanced are eligible to appear for architecture aptitude test this is only qualifying test if you qualify then you will be able to get admission into IIT Kharagpur IIT Roorkee depending upon your JEE advanced rank.

Hope this helps all the best