Hello aspirant,

There is no problem if you selected BTech for paper 1 and B.arch for paper 2 as your both paper score are valid and according to your choice either you can go for BTech or B.Arch and also your rank will be decided on  the single paper results only. So now you have both the option BTech or B.arch . Choice is totally yours.

Hope this helps.

If any queries feel free to ask .

All the best!!

Regards.