Hello  buddy,Only students who have qualified the JEE Mains exam  are allowed to sit for JEE Advanced. If you  wants to join B.Arch in IIT Kahargpur / IIT Roorkee , you have  to first clear JEE Mains Paper 1 (not Paper 2,Paper 2 is only for admission to B.Arch in NITs/SPAs). Also, Only those candidates who would have filled B. Arch program (available at IIT Kharagpur and IIT Roorkee) as one of their choices while filling their choices will be eligible to take the Architecture Aptitude Test.

Best of  luck for your exam  buddy. 

hai Nishant, 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 in NITs and SPAs). Also, Only those candidates who would have given B. Arch program (available at IIT Kharagpur and IIT Roorkee) as one of their choices while filling their choices will be eligible to take the Architecture Aptitude Test.