Bachelors

A first class is required, at least 60% by some of them while the top ones require 75%.

Every subject should be cleared with required percentage to qualify to study in Canada. You need to have a pass certificate to get admissions anywhere.

Hi Gurjot, choosing a specific course will not grant you a visa. To get the visa you must know what you want to study and why. If you have no idea about your plans and interests you won't be accepted by any university nor will you get the visa. First see which all subjects you are good at, clearly from your grades you are better off with Arts and Humanities so go with subjects in this field, this is what I would suggest. Rest will depend on what you like.

Please refer to the links provided below for a list of colleges offering admission in various courses, and their admission requirements:
1) B.Sc.-https://www.shiksha.com/science/colleges/b-sc-colleges-gujarat
2) B.arch.-https://www.shiksha.com/architecture-planning/colleges/colleges-gujarat
3) B.Tech-https://www.shiksha.com/b-tech/colleges/b-tech-colleges-gujarat
4) BBA-https://www.shiksha.com/bba/colleges/bba-colleges-gujarat
5) Mass Comm & Media-https://www.shiksha.com Mass Communication & Media
6) B.Com-https://www.shiksha.com/accounting-commerce/colleges/b-com-colleges-gujarat

Yes, there are lots of college which offer B.Ed course on the basis of vacant seats without any entrance exam.

Hello Rehan,
I am attaching a useful link for you in this regard.
http://geebeeworld.com/Country-of-Study/canada/education-system/general-requirements-for-engineering-studies/

Yes, it is possible, First you need to crack CAT exam then according to your percentile you will get a call from different B-school and of course for IIMs you need above 93-94 %ile because you belong to OBC category. Otherwise for non-reservation category you need above 97-99 %ile.

You are advised to clear your backlogs first.