Degree

No,
There is no undergraduate course or degree, which include both computer and economics as the two subjects are way different.

Yes, definitely ! You need to qualify either GATE or Institute specific exams. A few institutes offer integrated M.Tech + Ph.D. option you can explore that option. JNU, BHU, IARI, IITs are a good option.

AMIE is recognised by government. Of India and is valid for IES UPSC, GATE IES and government Jobs (where Eq. B.Tech degree is also mentioned).

Hi,
I just came across you question. I feel that Reva University is one of the best in BBA media and mass communication programme. Fee would be something around 70k to 1 Lacs.

Hello Gokul,
For MSc in multimedia from ICAT, eligibility criteria is graduation in any discipline is enough. So, definitely, you're eligible for it.
All the best for your future

No, B.Tech degree will be given if you complete 4 year B.Tech degree programme. You should go for lateral entry in 2nd year B.Tech to complete your degree. All the best.

No. For getting a better colleges such as IITs, you need to qualify JEE exam which you can give if you are appearing in 12th or 12th pass out.

If you're having a budget and are getting enrollment in 1-tier colleges in UK, then the exposure might be worth it, but if you're planning for India and looking for some options providing equal level of technical skills as that of the UK colleges then do apply for Vedatya Institute-Gurgaon as it was previously affiliated by Oxford Brooks University-UK and follows the Harvard Method of teaching and is currently affiliated by IHG group of hotels and is owned by Radisson Blu Hotels, so you'll be getting UK quality education with luxurious hotel experience and top notch technical skills and knowledge. All the best.