What are the career options i can consider except engineering?
You need to do B.Arch for architecture. The entrance exams for B.Arch is NATA – check out the website for NATA – http://www.nata.in/
Since you do not want to go for engineering, and with a computer background, you may go for computer software programming degrees like BCA or BSc. IT.
There is lot of scope in animation industry, and hence if you have a creative mind and know a bit of sketching and stuff, you may try B.Sc Animation. The animation industry has more demand than supply, and hence there is a good demand for talented people.
Apart from NATA, which is a requirement for majority of colleges for admission to B.Arch, you first need to clear the JEE (Main) Entrance examination for B.Arch.
CBSE conducts the JEE (Main) examination for B.ARch – check out the details here – http://jeemain.nic.in/webinfo/welcome.aspx