CBSE 12th

You can try Chandigarh College of Architecture. To take admission there, you have to appear for JAC, Chandigarh counselling. You can also try NITs through central counselling.

Delhi University is one of the elite universities of India. Cut-off for Delhi University is generally very high. I don't think you will get admission there.

Its hard to say because different colleges have different requirements, they might not recognise your qualification or they might evaluate your grades as per their norms and check. it is best you personally contact a few universities, email them and they will guide you.

You have to do engineering or MBBS or any degree equivalent to graduation and after graduation you can set in the civil service exam for better result you can join coaching.

Chemistry. No type of engineering can match it. It is unique as well as provides broader options with physics, engineering people will always compete with you.

Sorry to say, but it is difficult for you to get admission with this score in an architect college.
A score of 90+ is considered in NATA to get admission in B.Arch in various government colleges.
Also, for NITs and government colleges, you need a score of 300+ in JEE Mains paper 2.
So, try for any private university.
Best of luck.

Greetings from Shiksha
Yes It is very to study B.Sc in MPCS at Vignan University in Guntur. As Vignan University is good University in every terms like training education and placements. So, kindly apply for it.

Admission to all courses (except Ph.D.) is done on the basis of an online entrance test -"GLAET", held at 60 centres all over India. Admission to these courses is subject to fulfilment of the eligibility criteria.
If you haven't attempted the exam, you cannot get into the college.