HI, You will have to give Jee Main Paper 2 exam which is for B.Arch.
The duration of the undergraduate architecture courses or B.Arch is 5 years. This course provides both theoretical and practical training and helps a candidate develop and sharpen his creative skills.
If you want to take admission in IP university delhi then you have to apper for NATA (National Apptitute Test of Architecture) conducted by Council or Architecture.

Hope this helps.
Good Luck.