CBSE 12th

Yes, you can pursue if taken English as a subject at 12th level. Further NIOS courses have full validity at par with other educational boards like CBSE and ICSE, etc.

Obviously residential campuses of Sri Chaitanya, Narayana and Bashyam Educational Institutions are the best intermediate top colleges in Andhra Pradesh. You have to choose the college which is in your locality for your comfort.

Basic eligibility requirements for a BCA course:
Aspirant must have passed 10+2 from any stream with English as passing subject with minimum 45%-55% marks in aggregate ( The pass percentage might vary from college to college)
While some colleges/universities admit aspirants on merit basis, the others admit students on the basis of personal interview and written examination.

Yes, there is-
VFX Training Institute which provides 1 or 2 year Diploma in animation.

Western India Institute of Aeronautics Pvt. Ltd. offers the following UG programs as under.
Course offered-
1. Aircraft Maintenance Engineering Mechanical Stream (Aeroplane & Power plants)
2. Aircraft Maintenance Engineering Avionics Stream (ES, IS &RN)
3. B.Sc (Hons.) AM IN MECHANICAL & AVIONICS
The eligibility criteria for above programs is 10+2 with PCM. Further there is no specific % is required for above courses.

No. The questions are based on general history. You have to just study the basic histroy.

Actually, this course is not available in Jamia Millia Islamia. But there is M.A in Mass Communication. Jamia Millia Islamia has B.A in mass media and if you apply for this then you are eligible.