Diploma

Yes, you can pursue Diploma on the basis on 12th marks but you need to check the eligibility first for the course you wish to pursue. In case, you are eligible for it, then you can apply for the same.

This is very college specific question. Please contact the college authorities for exact details:
Link : http://tseriesstageworks.com/tsa/

Hi Falgun,
Yes, Architecture is also offered as a Diploma course in a number of foreign universities. Diploma in Architecture is a certificate level course in the domain of Architecture and its related areas. The course can be pursued by candidates after completion of their class 10th education. Some of the popular institutes/colleges offering the Diploma level course are:
1. Academy of Architecture
2. ACN College of Polytechnic
3. AMIE Institute
4. Aryabhatt Polytechnic
5. BPS Institute of Technology
6. Government Polytechnic
https://bit.ly/2DWjySl.

Netaji Subhas Open University offers Bachelor's degree programme (BDP) in the following areas:
1. History (EHI)
2. Political Science (EPS)
3. Sociology (ESO)
4. Public Administration (EPA)
5. Education (EED)
The eligibility criteria for above programs is passed 10+2 examination or equivalent (Arts or science only) with 45% marks. So, if you have completed class 12th in arts or science then you are eligible. Further, you will not get admission in the above courses on the basis of Polytechnic.

AMU doesn't offer lateral entry for B.Tech course. So try for some different private college. All the best for your bright future my dear friend!
Work hard to get success!
Thank you!

At present, there is no feasible option nor you must do as it is a practical subject. AICTE stressed on its practical exposure so it restricted BE to full-time non-distance study.

Hello Bharath,
No, you can't do part-time B.Tech as it is not recognized and entertained by AICTE (All India Council for Technical Education).

No, there is no such college available in this district, but yes you can get some college in Meerut.

Yes, you can get admission in the 2nd year directly in the metallurgy department. For that, you have to appear for the Lateral Entry Entrance Examination i.e. conducted by state engineering entrance examination or the different private colleges that conduct their own examination.
Good luck.