To get admission in B.Arch, colleges either accept Jee main paper 2 or NATA so you can appear in both of the exams. Also, it would be better if you could share which particular college you are asking for, accordingly I would be providing you the complete admission process.

To know more about Jee main paper 2 and NATA you can go through the below links -

NATA 2018

JEE MAIN Paper 2

Hope this helps!!!

You can appear for JEE Main paper II and NATA exam to take admission in government college of architecture.

 

You can check the detail of the exam from the given below link

JEE Main paper 2

NATA

 

Good Luck!!