CBSE 12th

Yes, you can pursue a course in management field abroad after completing class 12th from NIOS. NIOS is recognised by the government of India.
All the best.

Yes, you can. For e.g. Kalshure takes internal test to assess your capability. However, several German institutes require you to complete 13 years of education which means completing 1st year of Bachelors and then applying for UG studies.

You should try for government colleges.

PCM will definitely be a smarter choice because maths forms an indispensable part of the acrhitecture curriculum.

You can check the colleges mentioned below:
Shri Lal Bahadur Shastri Rashtriya Sanskrit Vidyapeetha
Lady Sri Ram College for Women
Zakir Husain College
Daulat Ram College
Jamia Millia Islamia
Delhi School of Economics
Bhim Rao Ambedkar College
Apex College Of Management

You need 50% aggregate and 55% in PCM in 12th for the same.

You can do BA, BFA or NTT.

Hi,
You can have a career as software developer or programmer after degree in commerce provided you had maths as a subject in 12th. You can seek admission in MCA after B.Com to become a software developer. You can do MCA in few colleges without having maths in class XII but your choices will be very limited. I had many successful and excellent B.Com-MCA Developers in my teams during my corporate career. If you are interested in career in IT industry, you must seek admission in a good university for MCA.

Hi Raghib,
Try referring NCERT books, they are the best for every medium. Ask any private tutor for more details as I don't have enough knowledge on this topic.