Canada

Hi,
Both have different opportunities. MS is a more research oriented and academic degree. PGDM is more like a professional course. Which one you choose depends on your career interest.

Hey,
MS would be a better option for mechanical engineering in Canada as you will get more exposure to mechanical engineering field with lots of learning opportunities.

Hi,
Only IELTS score is not sufficient. You have to see if your academic grades are upto the mark and if you meet the admission requirements of the colleges. Please decide what to study also and accordingly check on the university/college websites.

Hi Romil,
This will be decided by the university, generally waivers are not given by Canadian universities but if your overall profile is good they may or at max can offer you a bridge course in English. I will really advise you to check with the universities directly.
Email them your scores and keep following up.

Hi,
CSE graduates are in demand in both countries but right now Canada is better and more welcoming to job seekers. You should, however, check the SOL of both the countries.

Master's degree would be a better option unless you have a company in mind which wants a PG Diploma graduate.