Canada

No, you need atleast 65% in board exams to apply under SDS category. However, you can apply for visa in general stream.

Hello,
Germany and UK have top notch business school apart from the above mentioned countries. For EMBA, there are no entrance exams and it requires extensive work experience of 10-15 years and someone who has worked at the managerial level.

Yes, you can. However, based on your syllabus only the course director can take this decision after seeing the papers you have covered in your engineering Diploma. If you have done this Diploma after 12th, you will be considered easily. If you have done 10th and then Diploma, it will be difficult to confirm this.

Which institute are you asking about? And, I think you should get in touch with the institute directly, check websites or email them for annual fee details.

I would suggest you to go for a degree course. A degree course always has a upper hand as compared to Diploma.

Hi,
The university might give you provisional admission, but you need to clear all backlogs before getting admission.

All courses abroad or specialized one. You can do PG Diploma or PG in:
Construction management
Structural engineering
Geo technical engineering
Go through few university website and see the course options.

Have you applied for any colleges?