Hello greetings

The admission into Bachelor of architecture course at IIT Kharagpur and IIT Roorkee is not based on JEE Main paper 2 the admission process for Bachelor of architecture at IIT Roorkee IIT Kharagpur follows the following procedur.

• A student need to appear for JEE Main paper 1 and qualify it to be eligible to appear for JEE advanced and only top 2 like a students are only able to qualify JEE Main paper 1 who are eligible to appear for JEE advanced.
• Once you qualified JEE Main paper 1 you need to appear for JEE advanced and qualified JEE advanced that is your score must be within the cutoff of JEE advanced in the respective categories.
• After the three weeks of JEE advanced result of JEE advanced declare and as soon as the result declared they announce the date and registration portal for architecture aptitude test which is organised by IITafter  for you need to register for architecture aptitude test.
• Once you complete the registration you need to appear for architecture aptitude test at the venue assigned to you and then you appear for the exam and then you need to qualify the architecture aptitude test
• Once you qualified architecture aptitude test you will be eligible to get admission into architecture programs at IIT based on your rank. Of JEE advanced

So this is the complete procedure to get into undergraduate program in architecture available at IIT Roorkee and IIT Kharagpur

Hope this helps all the best