Canada

Hi,
Only a diploma or advanced diploma won't guarantee or help you find a high profile job. You may only end up as a very basic entry level worker. If you are looking for career growth you have to aim for higher qualification like Masters or PG Diplomas and not undergraduate diplomas.

Hi,
You may obtain visa provided you have been offered admission in a college and have a very good career planning. You have to explain the same to the visa officers. Ask yourself questions like why management? What do you want to do after gaining the management degree?
It will depend on your application profile and how you project your needs.

Based on the information you have given nothing can be said. You have to specify your academic grades and also the gap period. Besides, what do you want to study?

I will suggest you to go for biotech. It has it has more scope and opportunities than chemistry. But it totally depends on your interests so select you career accordingly.

There are many occupations that may directly or indirectly involved Medical Science which you'll be at par with already high paid professionals. Mainly Sports Field and Industry is so which is quite in demand all over the globe. And yes country matter is clearly depending on your ability to work.

Yes. you can reapply but work on the points based on which you got rejected earlier. Check if you meet admission requirements firstly and then apply.

What do you want to study?

Hi Rishav,
Either IELTS or TOEFL is compulsory if you are planning to study abroad, particularly the countries you mentioned. You may still write to the universities and see if they can waive it off based on your scores. Otherwise check for English language pathway programs , please check with the universities about such courses.

Hi Vijay,
Please check with business schools for GMAT waiver, unless you have a very strong profile b-schools won't waive it off. You may also check Executive MBA programs. Check colleges under SPP such as Thompson Rivers University, no GMAT is required by them.