Architecture

First of all, I would really congratulate you for getting a good rank in JEE Mains. With this good rank, You can easily get top branches like CSE, ECE, EEE in decent NITs like MNIT, MNNIT, NIT-KKR, SVNIT. Even you are able to secure decent branches like Mechanical or Chemical in Top 7 NITs!
If you appear for CSAB Rounds, then you also have good enough chances to get top branches like ECE and EEE in Top NITs like VNIT, NITC, NITW, NITRKL or even NIT-Trichy in case if there are seats available in these branches!
So with this rank, You have a huge scope of getting all top branches like CSE, ECE or EEE and even you can get top branches in top NITs and IIITs with this rank. Good Luck for your Counselling!

B.Arch is a 5 year professional degree course. One can go for a job after B.Arch for a good experience or can start own consultancy firm (firm needs experience which one can get only after job). Council of Architecture (COA) India provides license for practicing as an architect. 'Generally' there are no placements in B.Arch but in no way it means architects are jobless. They have plenty of options to earn as assistant architect in good firms under reputed architects or start their own firm in any city. Architects build their own name, have their own individual identity, and they are their own Boss. It is just like doctors, do they go for placements? Obviously no. But they do their own practice, or as consultant in hospitals etc.