CBSE 12th

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.

Greetings from Shiksha.
Since For Chartered Accountant, boards Results does not matter much. But having good marks in 12th will benefit you to score good in Chartered Accountant Examinations.

Find a link below that will help you with finding a suitable college as per your JEE paper score:
https://www.shiksha.com/architecture-planning/colleges/b-arch-colleges-india
Hope this helps you.

Greetings from Shiksha.
Kindly provide your boards Result as well.
And if you have more 65% (OBC category) in boards, then kindly apply for JOSAA counselling process for getting admission in IITs, NITs and IIITs.

As you have just qualified JEE Mains 52 marks with the help of reservation.
Sorry to say, but no college is available for you with just 52 marks.
You can wait for your Advance result.