Hi aspirant...!

Hope you're doing great....!

So, with regard of you're query.  the syllabus for the B. Arch exam in JEE Mains includes the following subjects, these include Mathematics, Drawing and Aptitude test. So, for the Mathematics and Aptitude that exam will be in the online mode itself, and whereas for drawing it is offline mode that is pen and paper mode.

Checkout the following link for the total syllabus of the BArch exam in JEE Mains 2022: https://engineering.careers360.com/articles/jee-main-barch-syllabus

Hope this helps you!!