I got 11000 rank in the BARC which best NIT and IIT colleges can come.

Hi, With 11000 rank in JEE Mains paper 2 2019 exam and a good score in your class 12th, you have less chances to secure admission in NITs and IITs.

You cannot get admission in any of the NITs or IITs with this rank to pursue B.Arch. To get admission in IITs, you need to appear for JEE Advanced paper 2. And for admission in NITs, you should have a rank less than 1300.