Mechanics

As per better education in mechanical engineering, Germany is the best, but as per PR, Canada is the best place for everyone.

The most distinguishable difference is the probabilistic nature of quantum physics. In classical physics, all the parameters like position, momentum, time, etc are known exactly and absolutely. There is no uncertainty. But when it comes to quantum physics, we don't say "the particle is in this position". We say "the probability of finding the particle in this position is so and so". This way of looking at phenomena is inevitable in this realm and it can be used to explain a lot of things which couldn't be satisfactorily explained by classical physics.

Although, you should go according to your area of interest but if you are asking for the job prospect then CS has an upper hand as compared to mechanical and electrical. You can easily earn 30$ per hour after your degree completion.

You should refer to DC Pandey's Mechanics 1 textbook.

Whenever, I want to find whether something is in demand in other country or not, I first see in which profession I can go after my course and thereafter see the job listings on google. If it is high, then it is in demand or vice-versa.
So, see in which area you can go after MS mechanical and find the jobs listing on Google of that in Canada. If there are more number of jobs than good.

You need to score 75% in Bachelor degree and IELTS: 6 band. You have excellent score, you can try for:
1. TU - Munich,
2. RUHR BOCHUM – Aachen.
3. Other TU9s.

Check out the link mentioned below:
http://entrance-exam.net/jobs-after-mtech-in-mechanical-engineering/

Job prospects are good for mechanical engineers, check the SOL list for details. Getting a job but will depend on how skilled you are and how academically qualified you are.